document.write("
"); function CheckForm() { if(document.UserLogin.UserName.value=="") { alert("Please input UserName"); document.UserLogin.UserName.focus(); return false; } if(document.UserLogin.Password.value == "") { alert("Please input Password"); document.UserLogin.Password.focus(); return false; } if(document.UserLogin.verifycode.value == "") { alert("Please input Verifycode"); document.UserLogin.verifycode.focus(); return false; } return true; }