var testresults
function checkemail(){
	var str=document.register.email.value;
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	if (filter.test(str)){
		testresults=true;
	}else{
		alert("Please input a valid email address!");
		testresults=false;
	}
	return (testresults);
}

function checkbae(){
	if (document.layers||document.getElementById||document.all){
		return checkemail();
	}	else{
		return true;
	}
}