// JavaScript Document
function checkuser() {
	if (document.f1.t1.value=="client" & document.f1.p1.value=="client") {
	location.href='client.html';
	}
	else if (document.f1.t1.value=="" & document.f1.p1.value=="") {
	alert("Please input Username!");
	}
	else {
	alert("Invalid User or Password!");
	document.f1.t1.value="";
	document.f1.p1.value="";
	}
}