/* state = 1 - show element
   state = 0 - hide element
*/
function toggleDiv(divID, state){
	if(document.layers){ //netscape 4+
		document.layers[divID].visibility = state ? "show" : "hide";
		document.layers[divID].display = state ? "block" : "none";
	} else if(document.getElementById) { //netscape 6 internetExplorer 5+
		document.getElementById(divID).style.visibility = state ? "visible" : "hidden";
		document.getElementById(divID).style.display = state ? "block" : "none";
	} else {    //Internet Explorer 4
		document.all[divID].style.visibility = state ? "visible" : "hidden";
		document.all[divID].style.display = state ? "block" : "none";
	}
}

function isBrowserSupp() {
	// Get the version of the browser
	version =  parseFloat( navigator.appVersion );
	if ( ( version >= 2.0 ) && ( version < 2.1 ) && ( navigator.appName.indexOf( "Netscape" ) != -1 ) ) {
		return false;
	} else {
		return true;
	}
	return true;
}

function isLeapYear( yrStr ) {
	var leapYear = false;
	var year = parseInt( yrStr, 10 );
	// every fourth year is a leap year
	if ( year % 4 == 0 ) {
		leapYear = true;
		// unless it's a multiple of 100
		if( year % 100 == 0 ) {
			leapYear = false;
			// unless it's a multiple of 400
			if( year % 400 == 0 ) {
				leapYear=true;
			}
		}
	}
	return leapYear;
}

function getDaysInMonth( mthIdx, YrStr ) {
	// all the rest have 31
	var maxDays = 31
	// expect Feb. (of course)
	if( mthIdx == 1 ) {
		if( isLeapYear( YrStr ) ) {
			maxDays=29;
		} else {
			maxDays=28;
		}
	}

	// thirty days hath...
	if( mthIdx == 3 || mthIdx == 5 || mthIdx == 8 || mthIdx == 10 ) {
		maxDays=30;
	}
	return maxDays;
}

function displayHotel(){
	toggleDiv('hotelTable', 1);
	toggleDiv('carTable', 0);
	toggleDiv('flightTable', 0);
	toggleDiv('cruiseTable', 0);

	document.getElementById('air').checked=false;
	document.getElementById('car').checked=false;
	document.getElementById('hotel').checked=true;
	document.getElementById('cruise').checked=false;
}

function displayCar(){
	toggleDiv('hotelTable', 0);
	toggleDiv('carTable', 1);
	toggleDiv('flightTable', 0);
	toggleDiv('cruiseTable', 0);

	document.getElementById('air').checked=false;
	document.getElementById('car').checked=true;
	document.getElementById('hotel').checked=false;
	document.getElementById('cruise').checked=false;
}

function displayCruise(){
	toggleDiv('hotelTable', 0);
	toggleDiv('carTable', 0);
	toggleDiv('flightTable', 0);
	toggleDiv('cruiseTable', 1);

	document.getElementById('air').checked=false;
	document.getElementById('car').checked=false;
	document.getElementById('hotel').checked=false;
	document.getElementById('cruise').checked=true;
}

function displayFlight(){
	toggleDiv('hotelTable', 0);
	toggleDiv('carTable', 0);
	toggleDiv('flightTable', 1);
	toggleDiv('cruiseTable', 0);

	document.getElementById('air').checked=true;
	document.getElementById('car').checked=false;
	document.getElementById('hotel').checked=false;
	document.getElementById('cruise').checked=false;
}

    //the function which does some magic to the date fields
    // return non-zero if it is the last day of the month
function adjustDate( mthIdx, Dt ) {
	var value = 0;

	var today = new Date()
	var theYear = parseInt( today.getYear(), 10 )

	if( mthIdx < today.getMonth() ) {
		theYear = ( parseInt( today.getYear(), 10 ) + 1 )
	}
	if( theYear < 100 ) {
		theYear = "19" + theYear
	} else {
		if( ( theYear - 100 ) < 10 ) {
			theYear = "0" + ( theYear - 100 )
		} else {
			theYear = ( theYear - 100 ) + ""
		}
		theYear = "20" + theYear
	}


	var numDays = getDaysInMonth( mthIdx, theYear );

	if( mthIdx == 1 ) {
		if( Dt.options.selectedIndex + 1 < numDays ) {
			return 0;
		} else {
			Dt.options.selectedIndex=numDays - 1;
			//check for leap year
			if( numDays == 29 ) {
				return 99;
			} else {
				return 1;
			}
		}
	}

	if( Dt.options.selectedIndex + 1 < numDays ) {
		value = 0;
	} else {
		if ( Dt.options.selectedIndex + 1 > numDays ) {
			Dt.options.selectedIndex--;
			value = 3;
		} else {
			//index is 31 or 30
			value = 2;
		}
	}
	return value;
}

//changes departure month when arrival month is changed
function amadChange( inM, inD, outM, outD ) {
	if ( !isBrowserSupp() ) {
		return;
	}

	var res = adjustDate( inM.options.selectedIndex, inD );
	if( res != 0 ) {
		outD.options.selectedIndex = 0;
		if ( outM.options.selectedIndex == 11 ) {
			outM.options.selectedIndex = 0
		} else {
			outM.options.selectedIndex=inM.options.selectedIndex + 1;
			outD.options.selectedIndex = 1;
		}
	} else {
		outM.options.selectedIndex = inM.options.selectedIndex;
		if (outD.options.selectedIndex <= inD.options.selectedIndex) {
			outD.options.selectedIndex = inD.options.selectedIndex + 2;
		}
	}
	return;
}


function dmddChange( outM, outD ) {
	if ( !isBrowserSupp() ) {
		return;
	}

	adjustDate( outM.options.selectedIndex, outD );
	return;
}



function OpenWindow(file, name, width, height) {
	OpenWindow(file, name, width, height, false);
}

function OpenWindow(file, name, width, height, showLeftTopScrollbar) {
	var attr = "";
	if(showLeftTopScrollbar) {
		attr += "top=50,left=50,scrollbars=1,";
	}
	attr += "width=" + width + ",height=" + height + ",resizeable=1";
	window.open(file, name, attr);
}

function loadDefaultDates() {
	var airArrival = new Date();
	var airDeparture = new Date();
	var carArrival = new Date();
	var carDeparture = new Date();
	var hotelArrival = new Date();
	var hotelDeparture = new Date();

	var hotelAdvanceArrival = 21;
	var hotelAdvanceDeparture = 23;
	var carAdvanceArrival = 7;
	var carAdvanceDeparture = 8;
	var airAdvanceArrival = 14;
	var airAdvanceDeparture = 15;

	airArrival.setDate( airArrival.getDate() + airAdvanceArrival );
	airDeparture.setDate( airDeparture.getDate() + airAdvanceDeparture );
	carArrival.setDate( carArrival.getDate() + carAdvanceArrival );
	carDeparture.setDate( carDeparture.getDate() + carAdvanceDeparture );
	hotelArrival.setDate( hotelArrival.getDate() + hotelAdvanceArrival );
	hotelDeparture.setDate( hotelDeparture.getDate() + hotelAdvanceDeparture );

	document.forms['airForm'].departureMonth.value = airArrival.getMonth();
	document.forms['airForm'].returnMonth.value = airDeparture.getMonth();
	document.forms['airForm'].departureDay.value = airArrival.getDate();
	document.forms['airForm'].returnDay.value = airDeparture.getDate();

	document.forms['carForm'].pickUpMonth.value = carArrival.getMonth();
	document.forms['carForm'].dropOffMonth.value = carDeparture.getMonth();
	document.forms['carForm'].pickUpDay.value = carArrival.getDate();
	document.forms['carForm'].dropOffDay.value = carDeparture.getDate();

	document.forms['hotForm'].arrivalMonth.value = hotelArrival.getMonth();
	document.forms['hotForm'].departureMonth.value = hotelDeparture.getMonth();
	document.forms['hotForm'].arrivalDay.value = hotelArrival.getDate();
	document.forms['hotForm'].departureDay.value = hotelDeparture.getDate();

}

function validateDepWindow(formName) {
	if (document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('M')) {
		window.document.forms[formName].tripWindow.value='5';
		window.document.forms[formName].departureTime.value='7AM';
	} else if (document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('A')) {
		window.document.forms[formName].tripWindow.value='5';
		window.document.forms[formName].departureTime.value='3PM';
	} else if (document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('E')) {
		window.document.forms[formName].tripWindow.value='5';
		window.document.forms[formName].departureTime.value='8PM';
	} else if(document.forms[formName].tempDepTime[document.forms[formName].tempDepTime.selectedIndex].value==('ANT')) {
		window.document.forms[formName].tripWindow.value='9';
		window.document.forms[formName].departureTime.value='12PM';
	} else {
		window.document.forms[formName].tripWindow.value='5';
		window.document.forms[formName].departureTime.value=document.forms[formName].tempDepTime.value;
	}
}

function validateRetWindow(formName) {
	if (document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('M')) {
		window.document.forms[formName].returnTime.value='7AM';
	} else if (document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('A')) {
		window.document.forms[formName].returnTime.value='3PM';
	} else if (document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('E')) {
		window.document.forms[formName].returnTime.value='8PM';
	} else if(document.forms[formName].tempRetTime[document.forms[formName].tempRetTime.selectedIndex].value==('ANT')) {
		window.document.forms[formName].returnTime.value='12PM';
	} else {
		window.document.forms[formName].returnTime.value=window.document.forms[formName].tempRetTime.value;
	}
}





















































function update(themonth,theday){
	document.forms[fName].elements[formType+'Day'].options[theday - 1].selected = true;
	document.forms[fName].elements[formType+'Month'].options[themonth].selected = true;

	testWindow.close();
}


function loadCalendar(viewMonth) {


	testWindow.document.close();
	testWindow.document.open();


	var day_of_week = new Array("Sun","Mon","Tue","Wed","Thu","Fri","Sat");
	var month_of_year = new Array("January","February","March","April","May","June","July","August","September","October","November","December");

	var dateObj = new Date();
	var year = dateObj.getYear();	 // Returns year
	var month = dateObj.getMonth();  // Returns month (0-11)
	var today = dateObj.getDate();   // Returns day (1-31)
	var weekday = dateObj.getDay();  // Returns day (1-31)

	var DAYS_OF_WEEK = 7;   // "constant" for number of days in a week
	var DAYS_OF_MONTH = 31; // "constant" for number of days in a month
	var cal;                // Used for printing

	if (viewMonth < month) {
		year = year + 1;
	}

	if(year < 1900){
		year += 1900; //done to solve the problem of netscape and mozilla returning year in form 10X for years > 2000
	}

	month = viewMonth;
	dateObj.setDate(1);      // Start the calendar day at '1'
	dateObj.setMonth(month); // Start the calendar month at now
	dateObj.setYear((year));

	// VARIABLES FOR FORMATTING
	var TR_start = '<TR>';
	var TR_end = '</TR>';
	var highlight_start = '<TD WIDTH="30"><TABLE CELLSPACING=0 BORDER=1 BGCOLOR=DEDEFF BORDERCOLOR=CCCCCC><TR><TD WIDTH=20><B><CENTER>';
	var highlight_end   = '</CENTER></TD></TR></TABLE></B>';
	var TD_start = '<TD WIDTH="30"><CENTER>';
	var TD_end = '</CENTER></TD>';
	var prevM = month - 1;
	var nextM = month + 1;

	if (nextM == 12) {
		nextM = 0;
	}

	if (prevM == -1) {
		prevM = 11;
	}

	// BEGIN CODE FOR CALENDAR
	cal =  '<html><head><title>Calendar</title></head><body>';
	cal += "<style>a:link{cursor: hand}a:active{cursor: hand}a:hover{cursor: hand}a:visited{cursor: hand}body{cursor: default}</style>";

	// NOTE:
	// Update the calendar.js reference below to reference where you
	// put the calendar.js file.

	// cal += '<SCRIPT SRC="calendar.js"></SCRIPT>';

	cal += '<TABLE BORDER="1" CELLSPACING="0" CELLPADDING="0" BORDERCOLOR="BBBBBB" width="100%" height="200"><TR><TD>';
	cal += '<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="2" width="100%">' + TR_start;
	cal += '<TD COLSPAN="' + DAYS_OF_WEEK + '" BGCOLOR="#EFEFEF"><CENTER><B>';
	cal += month_of_year[month]  + '   ' + year + '</B>' + TD_end + TR_end;
	cal += TR_start;

	///////////////////////////////////
	// DO NOT EDIT BELOW THIS POINT  //
	///////////////////////////////////

	// LOOPS FOR EACH DAY OF WEEK
	for(index=0; index < DAYS_OF_WEEK; index++) {
		// PRINTS DAY
		cal += TD_start + day_of_week[index] + TD_end;
	}

	cal += TD_end + TR_end;
	cal += TR_start;

	// FILL IN BLANK GAPS UNTIL TODAY'S DAY
	for(index=0; index < dateObj.getDay(); index++) {
		cal += TD_start + '  ' + TD_end;
	}

	// LOOPS FOR EACH DAY IN CALENDAR
	for(index=0; index < DAYS_OF_MONTH; index++) {
		if( dateObj.getDate() > index ) {
			// RETURNS THE NEXT DAY TO PRINT
			week_day =dateObj.getDay();

			// START NEW ROW FOR FIRST DAY OF WEEK
			if(week_day == 0) {
				cal += TR_start;
			}

			if(week_day != DAYS_OF_WEEK) {
				// SET VARIABLE INSIDE LOOP FOR INCREMENTING PURPOSES
				var day  = dateObj.getDate();

				// PRINTS DAY
				cal += TD_start + "<span onclick='window.opener.update(" + month + "," + day + ")' style='cursor:hand;font-weight:bold;background:#EFEFEF;width:22px;'>" + day + "</span>" + TD_end;
			}

			// END ROW FOR LAST DAY OF WEEK
			if(week_day == DAYS_OF_WEEK) {
				cal += TR_end;
			}
		}

		// INCREMENTS UNTIL END OF THE MONTH
		dateObj.setDate(dateObj.getDate()+1);

	}// end for loop

	cal += '</td></TR></TABLE></TABLE><br>';
	cal += '<div align="center"><a href="javascript:" onClick="window.opener.loadCalendar(' + prevM + ');">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;&nbsp;';
	cal += '<a href="javascript:" onClick="window.opener.loadCalendar(' + nextM + ');">&gt;&gt;</a><br><br></div>';
	cal += '<div align="right"><a href="javascript:window.close();">close</a></div>';
	cal += '</body></html>';

	//  PRINT CALENDAR
	testWindow.document.write(cal);
}

var testWindow;
var formType;
var fName;

function openCalendar(formName,type) {
	formType=type;
	fName=formName;
	testWindow = window.open('','dates','width=360,height=300,resizable=1,status=1,menubar=0,location=0');
	loadCalendar(document.forms[fName].elements[formType+'Month'].selectedIndex);
}























































function groups(form) {
	if (form.numberOfRooms.selectedIndex == 8) {
		window.location="http://travel.ian.com/index.jsp?pageName=groups&cid=147890";
		return false;
	}
	return submitGuestInfoForm(form);
}




























































			function populateMonths() {
				var date = new Date();
				var month = date.getMonth();
				var year = date.getFullYear();
				var i;

				//clear option list
				ClearOptions(monthOptionList);

				//Add first option "All Dates" to the option list
				AddToOptionList(monthOptionList ,"ALL", "All Dates");

				//add months to the option list
				for(i=0; i<numOfMonths; i++) {
					var value = (month+1)+"/1/"+year;
					var Text = months[month]+" "+year;
					AddToOptionList(monthOptionList, value, Text);
					month++;
					if( month > 11 ) {
						month = 0;
						year++;
					}
				}

			}

			function ClearOptions(OptionList) {
				// Always clear an option list from the last entry to the first
				for (x = OptionList.length; x >= 0; x = x - 1) {
					OptionList[x] = null;
				}
			}


			function AddToOptionList(OptionList, OptionValue, OptionText) {
				// Add option to the bottom of the list
				OptionList[OptionList.length] = new Option(OptionText, OptionValue);
			}






























































    function setChildAge(room, child, age) {
        if (childAgesPerRoom[room] == null) {
            childAgesPerRoom[room] = new Array();
        }
        childAgesPerRoom[room][child] = age;
    }

    function setNumAdults(room, numAdults) {
        adultsPerRoom[room] = numAdults;
    }

    function setNumChildren(room, numChildren) {
        childrenPerRoom[room] = numChildren;
        refresh();
    }

    function setNumRooms(x) {
        numRooms = x;
        for (i = 0; i < x; i++) {
            if (adultsPerRoom[i] == null) {
                adultsPerRoom[i] = 2;
            }
            if (childrenPerRoom[i] == null) {
                childrenPerRoom[i] = 0;
            }
        }
        refresh();
    }

    function renderRoomSelect() {
        var x = '';
        x += '<select name="numberOfRooms" onchange="setNumRooms(this.options[this.selectedIndex].value);">';
        for (var i = 1; i < 9; i++) {
            x += '<option value="'+i+'"'+(numRooms == i ? ' selected' : '')+'>' + i;
        }
        x += '<option value="9"'+(numRooms == 9 ? ' selected' : '')+'>9+';
        x += '</select>';
        return x;
    }

    function refresh() {
        maxChildren = 0;
        for (var i = 0; i < numRooms; i++) {
            if (childrenPerRoom[i] > maxChildren) {
                maxChildren = childrenPerRoom[i];
            }
        }

        var x = '';
        if (adultHelp.length > 0) {
            x = adultHelp + "<p>\n";
        }

        if (numRooms > 8) {
            x += textRooms;
            x += renderRoomSelect();

        } else {
            x += '<table border="0" cellspacing="2" cellpadding="0">\n';
            x += '<tr><td'+cellStyle+'>'+textRooms+pad+'</td>';
            if (numRooms > 1) {
                x += '<td'+cellStyle+'>&nbsp;</td>';
            }
            x += '<td'+cellStyle+'><nobr>'+textAdults+pad+'</nobr></td><td'+cellStyle+'><nobr>'+textChildren+pad+'</nobr></td></tr>\n';
            for (var i = 0; i < numRooms; i++) {
                x += '<tr><td'+cellStyle+'>';
                if (i == 0) {
                    x += renderRoomSelect();
                } else {
                    x += '&nbsp;';
                }
                x += '</td>';
                if (numRooms > 1) {
                    x += '<td'+cellStyle+'><nobr>'+getValue(textRoomX, i+1)+pad + '</nobr></td>';
                }
                x += '<td'+cellStyle+'>';
                x += buildSelect('room-' + i + '-adult-total', 'setNumAdults(' + i + ', this.options[this.selectedIndex].value)', 1, 4, adultsPerRoom[i]);
                x += '</td><td'+cellStyle+'>';
                x += buildSelect('room-' + i + '-child-total', 'setNumChildren(' + i + ', this.options[this.selectedIndex].value)', 0, 6, childrenPerRoom[i]);
                x += '</td></tr>\n';
            }
            x += '</table>\n';

            var didHeader = false;
            for (var i = 0; i < numRooms; i++) {
                if (childrenPerRoom[i] > 0) {
                    if (!didHeader) {
                        x += '<table border="0" cellpadding="0" cellspacing="2">\n';
                        x += '<tr><td'+cellStyle+' colspan="'+(maxChildren+1)+'">';
                        x += '<img src="/images/p.gif" width="1" height="5"><br>';
                        x += childHelp;
                        x += '<img src="/images/p.gif" width="1" height="5"><br>';
                        x += '</td></tr>\n<tr><td'+cellStyle+'>&nbsp;</td>';
                        for (var j = 0; j < maxChildren; j++) {
                            x += '<td'+cellStyle+'><nobr>'+getValue(textChildX, j+1)+pad+'</nobr></td>\n';
                        }
                        didHeader = true;
                    }
                    x += '</tr>\n<tr><td'+cellStyle+'><nobr>'+getValue(textRoomX, i+1)+pad+'</nobr></td>';
                    for (var j = 0; j < childrenPerRoom[i]; j++) {
                        x += '<td'+cellStyle+'>';
                        var def = -1;
                        if (childAgesPerRoom[i] != null) {
                            if (childAgesPerRoom[i][j] != null) {
                                def = childAgesPerRoom[i][j];
                            }
                        }
                        x += '<select name="room-'+i+'-child-'+j+'-age" onchange="setChildAge('+i+', '+j+', this.options[this.selectedIndex].value);">';
                        x += '<option value="-1"'+(def == -1 ? ' selected' : '')+'>-?-';
                        x += '<option value="0"'+(def == 0 ? ' selected' : '')+'>&lt;1';
                        for (var k = 1; k <= 18; k++) {
                            x += '<option value="'+k+'"'+(def == k ? ' selected' : '')+'>'+k;
                        }
                        x += '</td>';
                    }
                    if (childrenPerRoom[i] < maxChildren) {
                        for (var j = childrenPerRoom[i]; j < maxChildren; j++) {
                            x += '<td'+cellStyle+'>&nbsp;</td>';
                        }
                    }
                    x += '</tr>\n';
                }
            }
            if (didHeader) {
                x += '</table>\n';
            }
        }

        document.getElementById("hot-search-params").innerHTML = x;
    }

    function buildSelect(name, onchange, min, max, selected) {
        var x = '<select name="' + name + '"';
        if (onchange != null) {
            x += ' onchange="' + onchange + '"';
        }
        x +='>\n';
        for (var i = min; i <= max; i++) {
            x += '<option value="' + i + '"';
            if (i == selected) {
                x += ' selected';
            }

            x += '>' + i + '\n';
        }
        x += '</select>';
        return x;
    }

    function validateGuests(form) {
        if (numRooms < 9) {
            var missingAge = false;
            for (var i = 0; i < numRooms; i++) {
                var numChildren = childrenPerRoom[i];
                if (numChildren != null && numChildren > 0) {
                    for (var j = 0; j < numChildren; j++) {
                        if (childAgesPerRoom[i] == null || childAgesPerRoom[i][j] == null || childAgesPerRoom[i][j] == -1) {
                            missingAge = true;
                        }
                    }
                }
            }

            if (missingAge) {
                alert(textChildError);
                return false;
            } else {
                return true;
            }
        } else {
            return true;
        }
    }

    function submitGuestInfoForm(form) {
        if (!validateGuests(form)) {
            return false;
        }
        return true;
    }

    function getValue(str, val) {
        return str.replace(/\?/g, val);
    }