function isEmailValid(value){  
	/* Checks for format myname@mydomain.com*/
   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
   return emailPattern.test(value); 
 }
 
function isUSZipValid(value) {
	/* Checks for format xxxxx or xxxxx-xxxx*/
	var us5or9ZipPattern  = /(^\d{5}$)|(^\d{5}-\d{4}$)/;	
	return us5or9ZipPattern.test(value);
}

function isPhoneValid(value)
{
	/* Checks for format xxx-xxx-xxxx*/
	var phonePattern = /^[2-9]\d{2}-\d{3}-\d{4}/;
	return phonePattern.test(value);
}
function IsNumeric(value)
{
	/* Checks if the value is a number or not*/
	return (value - 0) == value && value.length > 0;
}