function isemail_valid(FormName,ElemName){
	
	var Temp     = document.forms[FormName].elements[ElemName];
	var AtSym    = Temp.value.indexOf('@');
	var Period   = Temp.value.lastIndexOf('.');
	var Space    = Temp.value.indexOf(' ');
	var Length   = Temp.value.length - 1;   // Array is from 0 to length-1

	if ((AtSym < 1) ||			// '@' cannot be in first position
		(Period <= AtSym+1) ||		// Must be atleast one valid char btwn '@' and '.'
		(Period == Length ) ||		// Must be atleast one valid char after '.'
		(Space  != -1))				// No empty spaces permitted

		return false; 
	else
		return true;
	}

function isnot_alpha(words,l){

	var valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ .'";

	if(words.value.length < l){
		return false;
		}
	
	for (var i=0; i< words.value.length; i++){
		var temp = "" + words.value.substring(i,i+1);
		if (valid.indexOf(temp) == "-1"){
			return false;
			}
		}
		return true;
	}


function isnot_numeric(words,l){

	var valid = "1234567890-()/ '";

	if(words.value.length < l ||
		words.value.length > l){
		return false;
		}

	for (var i=0; i< words.value.length; i++){
		var temp = "" + words.value.substring(i,i+1);
		if (valid.indexOf(temp) == "-1"){
			return false;
			}
		}
		return true;
	}
	
function isnot_Zip(words,l){

	var valid = "1234567890";

	if(words.value.length < l ||
		words.value.length > l){
		return false;
		}

	for (var i=0; i< words.value.length; i++){
		var temp = "" + words.value.substring(i,i+1);
		if (valid.indexOf(temp) == "-1"){
			return false;
			}
		}
		return true;
	}
	
function isnot_teleNum(words){

	var valid = "1234567890";

	if(words.value.length < 12 ||
		words.value.length > 12 ||
		words.value.charAt(3) != "-" ||
		words.value.charAt(7) != "-") {
			return false;
			}
		
	for (var i=0; i < 3; i++){
		var temp = "" + words.value.substring(i,i+1);
		if (valid.indexOf(temp) == "-1"){
			return false;
			}
		}
	
	for (var i=4; i < 7; i++){
		var temp = "" + words.value.substring(i,i+1);
		if (valid.indexOf(temp) == "-1"){
			return false;
			}
		}
	
	for (var i=8; i < 12; i++){
		var temp = "" + words.value.substring(i,i+1);
		if (valid.indexOf(temp) == "-1"){
			return false;
			}
		}
		return true;
	}