<!--

var dtCh= "/";
var minYear=1900;
var maxYear=2100;

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 strDay=dtStr.substring(0,pos1)	
	var strMonth=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 : 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
}

function ValidateDate(Field){
	with(Field)
	{
		if (isDate(value)==false){
		return false
		}
    		return true	
	}
 }

function ajaxFunction(Field,formAction,userMessage,IDType)
{  
	var xmlHttp;
	try
    	{    // Firefox, Opera 8.0+, Safari    
    		xmlHttp=new XMLHttpRequest();    
    	}
  	catch (e)
    	{    // Internet Explorer    
    		try
      		{      
      			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");      
      		}
    		catch (e)
      		{      
      			try
        		{        
        			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");        
        		}
      			catch (e)
        		{        
        			alert("Your browser does not support AJAX!");        
        		}
        	}    
        }  
        
	xmlHttp.onreadystatechange=function()
      	{
      		if(xmlHttp.readyState==4)
        	{
        		document.getElementById(userMessage).innerHTML=xmlHttp.responseText;
        	}
      	}
    	//alert(action);
    	with(Field)
    	{
    		var IDType = IDType;
    		var FullUrl = formAction + "?" + IDType + "=" + value;
    		xmlHttp.open("GET",FullUrl,true);
    		xmlHttp.send(null);
    	}
}

function validate_checkbox(field,alerttxt)
{
	with (field)
	{
		if (!(field.checked))
  		{alert(alerttxt);return false}
  		else {return true}
    	}
}
    
function validate_required(field,alerttxt,checkemail)
{
	with (field)
	{
		if(checkemail)
  		{	
  			charset=new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$");
    		   
    			//always switch to lower case beforing checking the format.
    		   	var value2 = value.toLowerCase();
    			if (!charset.test(value2))
    			{
				{alert(alerttxt);return false}
			}
		}
    		
		if (value==null||value=="")
  		{alert(alerttxt);return false}
  		else 
  		{
  			value = trimAll(value);
			return true
  		}
    		    		
    	}
}

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 validate_passwords(field,field2,alerttxt)
{
	if(field.value===field2.value){return true}
	else{alert(alerttxt);return false}
}

function validatefieldlength(field,alerttxt,length)
{
	if (field.value.length<length)
  		{alert(alerttxt);return false}
  		else {return true}
}

function validateInt(field,alerttxt)
{
      with(field)
      {
      	 if (!isInteger(value))
  		{alert(alerttxt);return false}
  	 else {return true}
  	 
      }
}

function isInteger (s)
{
      var i;
      if (isEmpty(s))
      if (isInteger.arguments.length == 1) return 0;
      else return (isInteger.arguments[1] == true);

      for (i = 0; i < s.length; i++)
      {
         var c = s.charAt(i);

         if (!isDigit(c)) return false;
      }

      return true;
}
   
function isEmpty(s)
{
      return ((s == null) || (s.length == 0))
}

function isDigit (c)
{
      return ((c >= "0") && (c <= "9"))
}

function validate_dropdown(field,alerttxt)
{
	with(field)
	{
		var index  = field.selectedIndex
			
		if(index=="0"){alert(alerttxt);return false;}
		else{return true;}
		
	}
}

function validate_dropdown2(field,alerttxt)
{
	with(field)
	{
		var index  = field.selectedIndex
			
		if(index!="0"){return true;}
		else{return false;}
		
	}
}

function OpenNewWindow(URL)
{
	window.open(URL);
}

function validate_maxlength(field,alerttxt,maxlength)
{
	with (field)
	{
		var length = value.length;
		if (value.length > maxlength)
  		{alert(alerttxt);return false}
  		else {return true}
	}
}

function checkCapsLock( e,CapsLock ) {
	var myKeyCode=0;
	var myShiftKey=false;
	var myMsg='Caps Lock is On.';
	document.getElementById(CapsLock).innerHTML = "";
		// Internet Explorer 4+
		if ( document.all ) {
			myKeyCode=e.keyCode;
			myShiftKey=e.shiftKey;

		// Netscape 4
		} else if ( document.layers ) {
			myKeyCode=e.which;
			myShiftKey=( myKeyCode == 16 ) ? true : false;

		// Netscape 6
		} else if ( document.getElementById ) {
			myKeyCode=e.which;
			myShiftKey=( myKeyCode == 16 ) ? true : false;

		}

		// Upper case letters are seen without depressing the Shift key, therefore Caps Lock is on
		if ( ( myKeyCode >= 65 && myKeyCode <= 90 ) && !myShiftKey ) {
			document.getElementById(CapsLock).innerHTML = myMsg;
			//alert( myMsg );

		// Lower case letters are seen while depressing the Shift key, therefore Caps Lock is on
		} else if ( ( myKeyCode >= 97 && myKeyCode <= 122 ) && myShiftKey ) {
			document.getElementById(CapsLock).innerHTML = myMsg;
			//alert( myMsg );

		}	
		
}

//this function validate non-negative money value,you may alter the code to allow the negative money value
function validateMoney(field,alerttxt)
{
	with (field)
	{
		charset=new RegExp("^[+]?[0-9]+(\.[0-9]+)?$");
    		
    		if (!charset.test(value))
    		{
			{alert(alerttxt);return false}
		}
		else if(isNaN(value))
		{
			{alert(alerttxt);return false}
		}
		else {return true}
    	}
}

//-->

