function isWhitespace(s)
{
   var i;
   for (i = 0; i < s.length; i++)
   {
		// Check that current character isn't whitespace.
		var c = s.charAt(i);
		if(c!=" ")
		return false;
   }
   // All characters are whitespace.
   return true;
}

function Validation(myform){

	if(myform.FName.value == ""){
		alert("Please enter 'First Name'.");
		myform.FName.focus();		
		return false;}
	else{
		if(isWhitespace(myform.FName.value)){
			alert("'First Name' cannot contain only spaces.");
			myform.FName.focus();
			return false;}
		}	
	
	if(myform.LName.value == ""){
		alert("Please enter 'Last Name'.");
		myform.LName.focus();		
		return false;}
	else{
		if(isWhitespace(myform.LName.value)){
			alert("'Last Name' cannot contain only spaces.");
			myform.LName.focus();
			return false;}
		}			
	
	var EmailID = myform.EmailID.value;
	if (EmailID==""){
	alert ("Please enter 'E-mail Address'.");
	myform.EmailID.focus();
	return false;}

	if(EmailID != ""){
	var Temp     = EmailID;
	var AtSym    = Temp.indexOf('@');
	var Period   = Temp.lastIndexOf('.');
	var Space    = Temp.indexOf(' ');
	var Length   = Temp.length - 1 ;
	if ((AtSym < 1) || (Period <= AtSym+1) || (Period == Length ) || (Space  != -1)){
	alert("Please enter a valid 'Email Address'.");
	myform.EmailID.focus ();
	return false;}
	}
	
	if(myform.Message.value == ""){
		alert("Please enter 'Message'.");
		myform.Message.focus();		
		return false;}
	else{
		if(isWhitespace(myform.Message.value)){
			alert("'Message' cannot contain only spaces.");
			myform.Message.focus();
			return false;}
		}	
	

	return true;
}