function ValidateEmail(fld, forbiddendomain){   
	var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
	if (!(emailPattern.test(fld.value))) { 
			alert('Please enter a valid email address.');
			setTimeout(function() { fld.focus();} , 1); //Arreglo para Mozilla
		} else {
			var domain = fld.value.split("@");
			if (domain[1].toUpperCase() == forbiddendomain.toUpperCase()) {
				alert("Please write your own e-mail address.");
				setTimeout(function() { fld.focus();} , 1); //Arreglo para Mozilla
			} else {
				return true;
			}
		}
 }


function LimitText(fld, limitNum) {
    if (fld.value.length > limitNum) fld.value = fld.value.substring(0, limitNum); 
}