function noenter(value,event) {
	if(trim(value) == '') {
		// when '' and event and enter return false
		return !(
			(window.event && window.event.keyCode == 13)
		||
			(event && event.which == 13)
		);
	} else {
		return true;
	}
}

function trim(str) {
	return str.replace(/^\s*|\s*$/g,"");
}