<!--
function isEmail (s)	{   			
   // there must be >= 1 character before @, so we
   // start looking at character position 1 
   // (i.e. second character)
   var i = 1;
   var sLength = s.length;
		
   // look for @
   while ((i < sLength) && (s.charAt(i) != "@")) { 
		i++				
  }	
		
    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != ".")) {
		  i++
		}

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}

//----------------------------------------------------------------------------------------------------------------------	

//----------------------------------------------------------------------------------------------------------------------
function isSpace(test_string) {
	var Flag = "false";

	for( var i=0; i < test_string.length; i++){ 
		if (test_string.charAt(i) == " ") {
			return true; 
		}
		else {
			Flag = "false";
		}
	}
	
	if(Flag == "false") {
		return false;
	}
	else {
		return true;
	}
	
}
//----------------------------------------------------------------------------------------------------------------------

var whitespace = " ";
function isWhitespace(s) {
	for (i = 0; i < s.length; i++)
   {   
       // Check that current character isn't whitespace.
       var c = s.charAt(i);
       if (whitespace.indexOf(c) == -1) return false;
			else return true;
   }	
}

//----------------------------------------------------------------------------------------------------------------------
function isFilled(ToBeChecked) {
   test_string = ToBeChecked.value
   var flag = "true"
 
   if(!isEmpty(test_string) ) { // if not an empty string check to see if a blank is entered. 
     for( var i=0; i< test_string.length; i++){  
       if(test_string.charAt(i) == " ") {
         flag = "false"
       }
	    else {
         flag = "true"
         return true
       }
     }
	 
     if(flag == "false") {
       return false
     }
     else {
       return  true
     }
   }
   else { // the string is an empty do a focus on the text box and prompt to the user. 
     return false
   }//else
 }
//----------------------------------------------------------------------------------------------------------------------

 //----------------------------------------------------------------------------------------------------------------------		
function isEmpty(inputstring) {
   if ( (inputstring == "") || (inputstring == null) ) {
     return true  
   }
   else {
     return false 
   }
 }	
 //----------------------------------------------------------------------------------------------------------------------
//-->