//\u7A97\u53E3\u6700\u5927\u5316
function fnMaxWindow(){
	window.moveTo(0,0);
	window.resizeTo(screen.availWidth,screen.availHeight);
}
//\u83B7\u53D6id
function GetId(id){
   return document.getElementById(id);
}
//\u521D\u59CB\u5316
function Init(){   
	fnMaxWindow();
	var doc=document.forms[0];
	var user=getLastLoginUser();
	if(user!=""){
		doc.Username.value=user;
		doc.Password.focus(); 
	}else{
		doc.Username.focus(); 
	}
} 
//\u5165\u53E3\u5224\u65AD
function CheckValue(){
 if (document.forms[0].Username.value== ""){
    alert("\u8BF7\u8F93\u5165\u60A8\u7684\u7528\u6237\u540D\uFF01");
    document.forms[0].Username.focus();
    return false;
 } 
 if (document.forms[0].Password.value== ""){
    alert("\u8BF7\u8F93\u5165\u60A8\u7684\u5BC6\u7801\uFF01");
    document.forms[0].Password.focus();
    return false;
 }
 return true;
}
//\u767B\u5F55\u6309\u94AE
function LoginTo(){
 if(CheckValue()){
 	if(GetId('remUser').checked) setLastLoginUser();
	document.forms[0].submit();
 }
}
//\u952E\u76D8\u56DE\u8F66\u64CD\u4F5C
function keypress(keypressed){
  if (event.keyCode == 13) LoginTo();
}
//\u83B7\u53D6\u6700\u540E\u767B\u5F55\u7528\u6237\u4FE1\u606F
function getLastLoginUser(){
	var cookies=document.cookie.split("LastLoginUser=");
	if(cookies.length>1)
	{
		values=cookies[1].split(";");
		return unescape(values[0]);
	}
	return '';
}
//\u4FDD\u5B58\u6700\u540E\u767B\u5F55\u7528\u6237\u4FE1\u606F
function setLastLoginUser(){
	var user=document.forms[0].Username.value;
	if(user=='')return false;
	var now=new Date();
	now.setFullYear(now.getFullYear()+1);
	var expires="; expires=" + now.toGMTString();
	document.cookie="LastLoginUser=" + escape(user) + expires + '; path=/';
}
window.onload = Init;