var isIe=(document.all)?true:false;
//设置select的可见状态
function setSelectState(state)
{
var objl=document.getElementsByTagName('select');
for(var i=0;i<objl.length;i++)
{
objl[i].style.visibility=state;
}
}
function mousePosition(ev)
{
if(ev.pageX || ev.pageY)
{
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
//弹出方法
function showMessageBox(wTitle,content,pos,wWidth)
{
closeWindow();
var bWidth=parseInt(document.documentElement.scrollWidth);
var bHeight=parseInt(document.documentElement.scrollHeight);
if(isIe){
setSelectState('hidden');}
var back=document.createElement("div");
back.id="back";
var styleStr="top:0px;left:0px;position:absolute;background:#666;width:"+bWidth+"px;height:"+bHeight+"px;";
styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;";
back.style.cssText=styleStr;
document.body.appendChild(back);
showBackground(back,50);
var mesW=document.createElement("div");
mesW.id="mesWindow";
mesW.className="mesWindow";
mesW.innerHTML="<div class='mesWindowTop' style=' height:auto; background-color:#ffffff; margin:auto;overflow: hidden;'><table width='100%' height='100%'><tr><td>"+wTitle+"</td><td style='width:1px;'><input type='button' onclick='closeWindow();' title='关闭窗口' class='close' value='关闭' /></td></tr></table></div><div class='mesWindowContent' id='mesWindowContent' style=' height:auto; background-color:#ffffff; margin:auto;overflow: hidden;'>"+content+"</div><div class='mesWindowBottom'></div>";
styleStr="left:"+(((pos.x-wWidth)>0)?(pos.x-wWidth):pos.x)+"px;top:"+(pos.y)+"px;position:absolute;width:"+wWidth+"px;";
mesW.style.cssText=styleStr;
document.body.appendChild(mesW);
}
//让背景渐渐变暗
function showBackground(obj,endInt)
{
	if(isIe)
	{
	obj.filters.alpha.opacity+=1;
		if(obj.filters.alpha.opacity<endInt)
		{
			setTimeout(function(){showBackground(obj,endInt)},5);
		}
	}else{
		var al=parseFloat(obj.style.opacity);al+=0.01;
		obj.style.opacity=al;
			if(al<(endInt/100)){
				setTimeout(function(){showBackground(obj,endInt)},5);
			}
	}
}
//关闭窗口
function closeWindow()
{
if(document.getElementById('back')!=null)
{
document.getElementById('back').parentNode.removeChild(document.getElementById('back'));
}
if(document.getElementById('mesWindow')!=null)
{
document.getElementById('mesWindow').parentNode.removeChild(document.getElementById('mesWindow'));
}
if(isIe){
setSelectState('');}
}
//测试弹出

function testMessageBox(ev,content,title,w)
{
	var objPos = mousePosition(ev);
	messContent="<div style='padding:10px 0 10px 0;text-align:center'>"+content+"</div>";
	showMessageBox(title,messContent,objPos,w);
}
function by_login(ev){
	var loginhtml;
	loginhtml="<table width='100%' height='100%' border='0' cellpadding='0' cellspacing='0' align=center bgcolor='#ffffff'> <tr><td><form id='loginfrom' name='loginfrom' method='post' action=''><table border='0' cellpadding='3' cellspacing='1'  align=center> <tr><td width='105' height='22' align='right' bgcolor='#FFFFFF'>用户名: </td><td width='211' align='left' bgcolor='#FFFFFF' style='padding-left:4px;'><label>  <input name='username' type='text' id='username'   style='width:120px;' onblur=\"usercheck('username_info')\" /></label><span id='username_info'></span></td> </tr> <tr><td height='22' align='right' bgcolor='#FFFFFF'>密码: </td><td align='left' bgcolor='#FFFFFF'  style='padding-left:4px;'><label><input name='password' type='password' id='password' style='width:120px;'  onblur=\"userpw('password_info')\" onKeyDown=\"if (event.keyCode==13)logincheckform('login_info')\"  /></label><span id='password_info'></span></td></tr><tr><td height='22' colspan='2' align='center' bgcolor='#FFFFFF'><label><input type='button' name='Submit' onclick=\"logincheckform('login_info')\" value='提交' />&nbsp;&nbsp;<input type='button' name='Submit2'  onclick='closeWindow();' value='取消'/></label></td></tr><tr><td height='22' colspan='2' align='center' bgcolor='#FFFFFF' id='login_info'  ></td></tr></table></form></td></tr></table>";
	//return loginhtml;
	testMessageBox(ev,loginhtml,"登录",395)
}
/*
function testMessageBox(ev)
{
	var objPos = mousePosition(ev);
	messContent="<div style='padding:20px 0 20px 0;text-align:center'>content</div>";
	showMessageBox("标题",messContent,objPos,350);
}
*/