// JScript File
// Removes leading whitespaces
function lrrim( value ) {

  var re = /\s*((\S+\s*)*)/;
  return value.replace(re, "$1");

}

// Removes ending whitespaces
function rtrim( value ) {

  var re = /((\s*\S+)*)\s*/;
  return value.replace(re, "$1");

}

// Removes leading and ending whitespaces
function trim( value ) {

  return lrrim(rtrim(value));

}

// Checks regular expressions
function revalid_testField(value, regexp) {
	if ( value != "" && value != null) {
		var myRe = regexp.exec(value);
		if ( !myRe ) {
			return false;
		} else { 
			return true;
		}
	}
	return true;
}

function revalid_number(value) {
	value = value.toString().replace(/\,/g, '');
	if((value + '') == '' )
		return false;
	return revalid_testField(value, /^([0-9]*)$/);
}

function revalid_decimal(value) {
	//if ((value + '') == 'undefined')
	//	return false;
	if(isEmpty(value))
	{
		return false;
	}		
	value = value.toString().replace(/\,/g, '');
	if (revalid_number(value)) {
		return true;
	}
	return revalid_testField(value, /^[0-9]*[.][0-9]*$/);
}

function revalid_isNaN(value) {
	if ((value + '') == 'NaN' || (value + '') == 'Infinity' ) {
		return true;
	}
	return false;
}
function $(id)
{
	return document.getElementById(id);
}
function isEmpty(value)
{
	if(value == null || typeof value == 'undefined')
	{
		return true;
	}
	if(trim(value) == '')
	{
		return true;
	}
	return false;
}
function checkEmail(value) 
{
	return revalid_testField(value, /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/);
}
function isEmail(value) 
{
	return revalid_testField(value, /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/);
}
function parseDecimal(s)
{
	if(!revalid_decimal(s))
	{
		return 0;
	}
	return parseFloat(s);
}


/*Date validation*/
/**
 * 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 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
}


function setCookie(c_name,value,expiredays)
{
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value) + ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
	if (document.cookie.length>0)
	{
		c_start=document.cookie.indexOf(c_name + "=");
		if (c_start!=-1)
		{ 
			c_start=c_start + c_name.length+1; 
			c_end=document.cookie.indexOf(";",c_start);
			if (c_end==-1) c_end=document.cookie.length;
			    return unescape(document.cookie.substring(c_start,c_end));
		} 
	}
	return "";
}

function getInternetExplorerVersion() {
    var rv = -1; // Return value assumes failure.
    if (navigator.appName == 'Microsoft Internet Explorer') {
        var ua = navigator.userAgent;
        var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
        if (re.exec(ua) != null)
            rv = parseFloat(RegExp.$1);
    }
    return rv;
}

function isDateValid(sValue, showError) {
    var bValid = false;
    fields = sValue.split("/");
    if (fields.length == 3 && !isNaN(fields[0]) && !isNaN(fields[1]) && !isNaN(fields[2]) && fields[0] < 13 && fields[0] > 0 && fields[1] < 32 && fields[1] > 0 && fields[2] > 1752 && fields[2] < 10000) {
        d = new Date(fields[2], fields[0] - 1, fields[1]);
        bValid = ((d.getDate() == fields[1]) && d >= new Date(1900, 0, 0));
    }
    return bValid;
}