function check_form() {	
for (i = 0; i < document.contact.elements.length; i++) {
 		oElem = document.contact.elements[i];
		if (oElem.type != "submit") {
			oElem.style.borderColor='';
			}
		}
		var error_field=document.getElementById('error');
		if (document.contact.User_Email.value!='')	{
		var pattern = '^([0-9a-zA-Z]+[-._+&])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$';
		if (!document.contact.User_Email.value.match(new RegExp(pattern))){
			document.contact.User_Email.style.borderColor='red';
			document.contact.User_Email.focus();
			error_field.innerHTML = "Invalid E-mail address format.";
			return false;
		}
		}	 		
		else {
			document.contact.User_Email.style.borderColor='red';
			document.contact.User_Email.focus();
			error_field.innerHTML = 'E-mail address is required.';
			return false;
			}
		if (document.contact.User_Name.value==''){
			document.contact.User_Name.style.borderColor='red';
			document.contact.User_Name.focus();
			error_field.innerHTML = 'Full Name is required.';
			return false;
		}
return true;
 }