function trimAll(sString)
{
	while (sString.substring(0,1) == ' ')
	{
		sString = sString.substring(1, sString.length);
	}
	
	while (sString.substring(sString.length-1, sString.length) == ' ')
	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}

function displayCalendar(textBox)
{
	window.open("calendar.aspx?textbox=" + textBox, "calendar", 'status=no,toolbar=no,titlebar=no,scrollbars=no,height=207,width=223');
}

function moveListItem(objSourceElement, objTargetElement)
{
    var aryTempSourceOptions = new Array();
    var x = 0;
    
    //looping through source element to find selected options
    for (var i = 0; i < objSourceElement.length; i++) {
        if (objSourceElement.options[i].selected) {
            //need to move this option to target element
            var intTargetLen = objTargetElement.length++;
            objTargetElement.options[intTargetLen].text = objSourceElement.options[i].text;
            objTargetElement.options[intTargetLen].value = objSourceElement.options[i].value;
        }
        else {
            //storing options that stay to recreate select element
            var objTempValues = new Object();
            objTempValues.text = objSourceElement.options[i].text;
            objTempValues.value = objSourceElement.options[i].value;
            aryTempSourceOptions[x] = objTempValues;
            x++;
        }
    }
    
    //resetting length of source
    objSourceElement.length = aryTempSourceOptions.length;
    //looping through temp array to recreate source select element
    for (var i = 0; i < aryTempSourceOptions.length; i++) {
        objSourceElement.options[i].text = aryTempSourceOptions[i].text;
        objSourceElement.options[i].value = aryTempSourceOptions[i].value;
        objSourceElement.options[i].selected = false;
    }
}

function showHideDivItem(in_item)
{
	var	item2 = document.getElementById(in_item);
	
	if(item2.style.display == "none")
		item2.style.display = "";
	else
		item2.style.display = "none";
}

function selectAllOptions(id)
{
	var ref = document.getElementById(id);

	for(i=0; i<ref.options.length; i++)
	ref.options[i].selected = true;
}


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){
    if(dtStr == "") return;
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/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
}