document.domain="qq.com";
var pop_ptlogin2_div ='pop_ptlogin2_div';
var pop_ptlogin2_frame ='pop_ptlogin2_frame';

function get_scrollTop()
{
	var scrollPos; 
	if (typeof window.pageYOffset != 'undefined') { 
	   scrollPos = window.pageYOffset; 
	} 
	else if (typeof document.compatMode != 'undefined' &&    document.compatMode != 'BackCompat') { 
	   scrollPos = document.documentElement.scrollTop; 
	} 
	else if (typeof document.body != 'undefined'){ 
	   scrollPos = document.body.scrollTop; 
	} 
	return scrollPos;
}

function create_login_frame()
{
	var w=375;	
	var x=document.body.clientWidth/2-w/2;
	var y=get_scrollTop()+parseInt(window.screen.height/5);
	var login_wnd = document.getElementById(pop_ptlogin2_div);
	if(login_wnd){
		login_wnd.style.left = x + "px";
		login_wnd.style.top = y + "px";			
		return;	
	}
	var html ='<div id="'+pop_ptlogin2_div+'" style="display:none;z-index:9999; position:absolute; left: '+x+'px; top: '+y+'px; width:'+w+'px; height:290px; padding:0; margin:0px;background:#FFF;" align="center">';
	html+='<iframe id="'+pop_ptlogin2_frame+'" name="'+pop_ptlogin2_frame+'" frameborder="0" scrolling="auto" width="100%" height="100%" src=""></iframe>'
	html+='</div>';
	J(document.body).append(html);
}

function ptlogin2_onResize(width, height) {
	var login_wnd = document.getElementById(pop_ptlogin2_div);
	if (login_wnd){
		login_wnd.style.width = width + "px";
		login_wnd.style.height = height + "px";		
		login_wnd.style.visibility = "hidden"
		login_wnd.style.visibility = "visible"
	}
}
function ptlogin2_onClose(){
		var login_wnd = document.getElementById(pop_ptlogin2_div);	
		login_wnd.style.display="none"
}

function qq_login_form(appid)
{
	create_login_frame();
	var backurl = (typeof arguments[1]) == 'string' ? arguments[1] : window.location.href;
	var url = "http://ui.ptlogin2.qq.com/cgi-bin/login?appid="+appid;
	var login_wnd = document.getElementById(pop_ptlogin2_div);
	if (login_wnd != null){
		login_wnd.style.visible = "hidden"	//先隐藏，这样用户就看不到页面的尺寸变化的效果
		login_wnd.style.display = "block"	//设为block， 否则页面不会真正载入
		
		url += "&style=0";
		url += "&s_url=";		
		url += escape(backurl);	//注意 ，一定要编码
		
		document.getElementById(pop_ptlogin2_frame).src = url;
	}	
}
/*  |xGv00|b7cb6e1cd106f80cc15f60e3c1a2a2d8 */