function Login(){
var done=0;
var username=document.login.username.value;
username=username.toLowerCase();
var password=document.login.password.value;
password=password.toLowerCase();
if (password=="0156") { window.location="veterinary_waste_management.htm"; done=1; }
if (username=="vet2" && password=="pass2") { window.location="veterinary_waste_management.htm"; done=1; }
if (username=="vet3" && password=="pass3") { window.location="veterinary_waste_management.htm"; done=1; }
if (done==0) { alert("Invalid login!"); }
}