function isValidEmail(str) {


			return (str != '' && str != null && str.indexOf(".") > 2)
					&& (str.indexOf("@") > 0);

}

function validate()
{

    var e = document.getElementById('required-email');
    if (!isValidEmail(e.value) ) {

    	var label = document.getElementById('lblEmail');
    	label.style.fontWeight='bold';
    	var field = document.getElementById('required-email');
    	field.style.backgroundColor ='yellow';
    	return false;
    } else {

    	return true;
    }

}