function showDropOffLocations(chkbox,div){
	div=document.getElementById(div);
	if(chkbox.checked==false){
		div.style.display="inline";
	} else {
		div.style.display="none";
		document.getElementById('dropofflocationid').selectedIndex=0;
	}
}
/* SEE CALENDAR.JS FOR CUSTOM CALENDAR FUNCTIONS */
/*function catcalc(cal) {
	var date = cal.date;
	var time = date.getTime()
	var date1 = new Date(time);
	// use the _other_ field
	var field2 = document.getElementById("f_calcdate");
	var field1 = document.getElementById("f_date_a");
	if(field2.value == ''){
		time += Date.DAY;
		var date2 = new Date(time);
		//date2.setDate(date2+1);
		field2.value = date2.print("%d/%m/%Y");
		var hidField2 = document.getElementById("dropoffdate");
		hidField2.value = date2.print("%d %m %Y");
	}
	// fill in hidden fields
	var hidField1 = document.getElementById("pickupdate");
	hidField1.value = date1.print("%d %m %Y");
}
function dcatcalc(cal){
	var date = cal.date;
	var time = date.getTime()
	var date1 = new Date(time);
	// use the _other_ field
	var field2 = document.getElementById("f_calcdate");
	var field1 = document.getElementById("f_date_a");
	if(field1.value == ''){
		time -= Date.DAY;
		var date2 = new Date(time);
		//date2.setDate(date2+1);
		field1.value = date2.print("%d/%m/%Y");
		var hidField1 = document.getElementById("pickupdate");
		hidField1.value = date2.print("%d %m %Y");
	}
	// fill in hidden fields
	var hidField2 = document.getElementById("dropoffdate");
	hidField2.value = date1.print("%d %m %Y");
}*/
/*var currDate = new Date();
var currY = currDate.getFullYear();
Calendar.setup({
	inputField     :    "f_date_a",
	button         :    "f_date_at",
	ifFormat       :    "%d/%m/%Y",
	showsTime      :    false,
	onUpdate       :    catcalc,
	range          :    [currY,(currY+1)],
	weekNumbers    :    false,
	disableFunc    :    disablePastDates
});
Calendar.setup({
	inputField     :    "f_calcdate",
	button         :    "f_calcdatet",
	ifFormat       :    "%d/%m/%Y",
	showsTime      :    false,
	onUpdate       :    dcatcalc,
	range          :    [currY,(currY+1)],
	weekNumbers    :    false,
	disableFunc    :    disablePastDates
});*/
function echeck(str) {
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}
		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }
		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }
		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		 if (str.indexOf(" ")!=-1){
		    return false
		 }
 		 return true					
	}
	
	/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
/*var dtCh= "/";
var minYear=1900;
var maxYear=2100;*/

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var dtCh= "/";
	var minYear=1900;
	var maxYear=2100;
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	day=parseInt(strDay)
	month=parseInt(strMonth)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : dd/mm/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}