function CheckForm(form)
{
	var i;
	var arr;
	var str;
	var x;
	
	for (i=0;i<form.elements.length;i++)
	{
		if(form.elements[i].name.substr(0,4) == "CHK_")
		{			
			
			str = GetFieldValueByName(form,form.elements[i].name.substr(4));
			
			if(str != null)
			{
			
				str = Trim(str);
							
				arr = form.elements[i].value.split("|");			
				
				switch(arr[0])
				{
					case "EMAIL":
						//check mandatory field							
						if (str.indexOf("@")==-1||str.indexOf("@")==0) //must have @ symbol
						{
							alert("The field >" + arr[4] + "< is not formatted properly (must have an '@').");
							form.elements[i-1].focus();
						    //form.CV_Email.focus(); //can't get to work
							return false;
						}

						if (str.indexOf(" ")!=-1) //no spaces allowed
						{
							alert("The field >" + arr[4] + "< is not formatted properly (no spaces allowed).");
							form.elements[i-1].focus();
							return false;
						}

						if (str.indexOf("..")!=-1) //too many periods
						{
							form.elements[i-1].focus();
							alert("The field >" + arr[4] + "< is not formatted properly (more than one '.').");
							return false;
						}

						if (str.indexOf(".")==-1||str.indexOf(".")==0) //must have . symbol
						{
							form.elements[i-1].focus();
							alert("The field >" + arr[4] + "< is not formatted properly (must have an '.').");
							return false;
						}
						
						if ((str.length == 0) && (arr[3] == "True"))
						{
							form.elements[i-1].focus();
							alert("The field >" + arr[4] + "< must be filled in.");
							return false;
						}
						
						//check min length	
						if (str.length < parseInt(arr[1]))
						{
							form.elements[i-1].focus();
							alert("The value in field >" + arr[4] + "< is too short.");
							return false;
						}
						
						//check max length
						if (str.length > parseInt(arr[2]))
						{
							form.elements[i-1].focus();
							alert("The value in field >" + arr[4] + "< is too long.");
							return false;
						}
						break;
											
					case "STR":
						//check mandatory field							
						if ((str.length == 0) && (arr[3] == "True"))
						{
							alert("The field >" + arr[4] + "< must be filled in.");
							return false;
						}
						
						//check min length	
						if (str.length < parseInt(arr[1]))
						{
							alert("The value in field >" + arr[4] + "< is too short");
							return false;
						}
						
						//check max length
						if (str.length > parseInt(arr[2]))
						{
							alert("The value in field >" + arr[4] + "< is too long");
							return false;
						}
						break;

					case "RADIO": 
                        //check mandatory field
                        if (arr[3] == "True")
						{ 
                        	fieldname = form.elements[i].name.substr(4);
                        	//alert("making sure value is in radio box" + fieldname) 
	                        fldObj = eval('document.frmQuestion.' + fieldname) 
    	                    fldval = getradiovalue(fldObj) 
        	                if (fldval=="")
							{ 
            		            alert("The field >" + arr[4] + "< must be filled in");
								return false;
							} 
						}
                        break; 
																	
					case "INT":
																
						//check mandatory field
						if ((str.length == 0) && (arr[3] == "True"))
						{
							alert("The field >" + arr[4] + "< must be filled in");
							return false;
						}
						
						//check sanity
						if(!(IsNumeric(str)))
						{
							alert("The value in field >" + arr[4] + "< may be numeric only");
							return false;
						}
												
						//check min value
						if (arr[1] != "x")
						{
							if (parseInt(str) < parseInt(arr[1]))
							{
								alert("The value in field >" + arr[4] + "< is too small");
								return false;
							}
						}
						
						//check max length
						if (arr[2] != "x")
						{
							if (parseInt(str) > parseInt(arr[2]))
							{
								alert("The value in field >" + arr[4] + "< is too big");
								return false;
							}
						}
						
						break;
					
					case "FLOAT":
																		
						//check mandatory field
						if ((str.length == 0) && (arr[3] == "True"))
						{
							alert("The field >" + arr[4] + "< must be filled in");
							return false;
						}
						
						//check sanity
						if(!(IsNumeric(str)))
						{
							alert("The value in field >" + arr[4] + "< is numeric only");
							return false;
						}
												
						//check min value
						if (arr[1] != "x")
						{
							if (parseFloat(str) < parseFloat(arr[1]))
							{
								alert("The value in field >" + arr[4] + "< is too small");
								return false;
							}
						}
						
						//check max length
						if (arr[2] != "x")
						{
							if (parseFloat(str) > parseFloat(arr[2]))
							{
								alert("The value in field >" + arr[4] + "< is too big");
								return false;
							}
						}
						
						break;
										
						
					case "DATE":
						
						//check mandatory field
						if ((str.length == 0) && (arr[3] == "True"))
						{
							alert("The field >" + arr[4] + "< must be filled in");
							return false;
						}
						
						//check sanity
						var datePat = /^(\d{1,2})(\/|-)(\d{1,2})(\/|-)(\d{4})$/;
						var matchArray = str.match(datePat); // is the format ok?

						if (matchArray == null) {
						alert("The value in field >" + arr[4] + "< is not a valid date (MM/DD/YYYY)");
						return false;
						}

						month = matchArray[1]; // p@rse date into variables
						day = matchArray[3];
						year = matchArray[5];

						if (month < 1 || month > 12) { // check month range
						alert("Month must be between 1 and 12.");
						return false;
						}

						if (day < 1 || day > 31) {
						alert("Day must be between 1 and 31.");
						return false;
						}

						if ((month==4 || month==6 || month==9 || month==11) && day==31) {
						alert("Month "+month+" doesn`t have 31 days!")
						return false;
						}

						if (month == 2) { // check for february 29th
						var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
						if (day > 29 || (day==29 && !isleap)) {
						alert("February " + year + " doesn`t have " + day + " days!");
						return false;
						}
						}
						
						//check min value
						if (arr[1] != "x")
						{
							if (GetDate(str) < GetDate(arr[1]))
							{
								alert("The date in field >" + arr[4] + "< is less than the minimum date");
								return false;
							}
						}
						
						//check max length
						if (arr[2] != "x")
						{
							if (GetDate(str) > GetDate(arr[2]))
							{
								alert("The value in field >" + arr[4] + "< is longer than the maximum length");
								return false;
							}
						}
						
						break;
				}
			}
		}
	}
	
	return true;

}

//============================================================================================

function Replace(string,replacechar,replacewith) 
{
	var temp = "";
	var i;
	
	string = '' + string;
	splitstring = string.split(replacechar);
	for(i = 0; i < splitstring.length; i++)
	{
		if(i < (splitstring.length -1))
			temp += splitstring[i] + replacewith;
		else
			temp += splitstring[i];
	}
	return temp;
}

//============================================================================================

function GetFieldValueByName(form,name)
{
	var i;
	
	for (i=0;i<form.elements.length;i++)
	{
		if(form.elements[i].name == name)
			return (form.elements[i].value);
	}
	return null;
}

/*

======================= STANDARD HELPER FUNCTIONS BELOW =======================================

*/
function IsNumeric(str)
{
	var i;
	for(i=0;i<str.length;i++)
	{
		if(!(	((str.charAt(i) <= '9') && (str.charAt(i) >= '0')) ||
				(str.charAt(i) == ' ') || (str.charAt(i) == '.') || (str.charAt(i) == '-')))
			return(false);
	}
	return(true);
}

//============================================================================================

function IsAlphaNumeric(str)
{
	var i;
	for(i=0;i<str.length;i++)
	{
		if(!(	((str.charAt(i) <= '9') && (str.charAt(i) >= '0')) ||
				((str.charAt(i) <= 'z') && (str.charAt(i) >= 'a')) ||
				(str.charAt(i) == ' ') || (str.charAt(i) == '-') ||
				(str.charAt(i) == 'ü') || (str.charAt(i) == 'ä') ||
				(str.charAt(i) == 'ö') || (str.charAt(i) == 'Ü') ||
				(str.charAt(i) == 'Ä') || (str.charAt(i) == 'Ö') ||
				(str.charAt(i) == 'é') || (str.charAt(i) == 'ß') ||
				((str.charAt(i) <= 'Z') && (str.charAt(i) >= 'A')) ))
			return(false);
	}
	return(true);
}

//============================================================================================

function IsAlpha(str)
{
	var i;
	
	for(i=0;i<str.length;i++)
	{
		if(!(	((str.charAt(i) <= 'z') && (str.charAt(i) >= 'a')) ||
				(str.charAt(i) == ' ') || (str.charAt(i) == '-') ||
				(str.charAt(i) == 'ü') || (str.charAt(i) == 'ä') ||
				(str.charAt(i) == 'ö') || (str.charAt(i) == 'Ü') ||
				(str.charAt(i) == 'Ä') || (str.charAt(i) == 'Ö') ||
				(str.charAt(i) == 'é') || (str.charAt(i) == 'ß') ||
				((str.charAt(i) <= 'Z') && (str.charAt(i) >= 'A')) ))
			return(false);
	}
	return(true);
}

//============================================================================================

function Trim(str)
{
	//trim leding spaces
	while(true)
	{
		if(str.charAt(0) == ' ')
			str = str.substr(1);
		else
			break;
	}
	
	//trim trailing spaces
	while(true)
	{
		if(str.charAt(str.length-1) == ' ')
			str = str.substr(0,str.length-1);
		else
			break;
	}
	return(str);	
}

//============================================================================================

function IsDate(argDate)
{
	var date_split;
	var i;
	var tdate, tmonth, tyear;
	
	date_split = argDate.split('/');
	
	//check for date parts
	if(date_split.length != 3)
		return(false);
		
	//check for zero values
	for(i=0;i<date_split.length;i++)
	{
		if(parseInt(date_split[i]) == 0)
			return(false);
	}
	
	//check for 4-digit year
	if(date_split[2].length != 4)
		return(false);
		
	//check for valid date, e.g. 02/29/1997
	tdate = parseInt(date_split[1]);
	tmonth = parseInt(date_split[0]);
	tyear = parseInt(date_split[2]);
	
	var date = new Date(parseInt(date_split[2]),parseInt(date_split[0])-1,parseInt(date_split[1]));
	
	if(date.getDate() != tdate)
		return(false);
	
	if(date.getMonth() != (tmonth-1))
		return(false);
	
	if(date.getFullYear() != tyear)
		return(false);
		
	return(true);
}


function GetDate(argDate)
{
	//use IsDate() first !!!!
	
	var date_split;	
	var tdate, tmonth, tyear;
	
	date_split = argDate.split('/');
	
		
	
	tdate = parseInt(date_split[1]);
	tmonth = parseInt(date_split[0]);
	tyear = parseInt(date_split[2]);
	
	return date = new Date(parseInt(date_split[2]),parseInt(date_split[0])-1,parseInt(date_split[1]));
		
}

function getradiovalue(frmObj) { 
   tval = ""    
   for (x=0;x<frmObj.length;x++) { 
      if (frmObj[x].checked) { 
         tval = frmObj[x].value 
      } 
   } 
   return tval 
}

function RefreshImage(valImageId) {
	var objImage = document.images[valImageId];
	if (objImage == undefined) {
		return;
	}
	var now = new Date();
	objImage.src = objImage.src.split('?')[0] + '?x=' + now.toUTCString();
}