function $()
{
	var results=[],element;
	for(var i=0;i<arguments.length;i++)
	{
		element=arguments[i];
		if(typeof element=='string')
		{
			element=document.getElementById(element);
		}
		try{
			results.push(Element.extend(element));
		}catch(e)
		{
			results.push(element);
		}
	}
	return results.length<2?results[0]:results;
}
function getLoginDiv() {
	if (!$('menu_logonDiv')) {
		var tmp='';
		
		tmp += '<div id="menu_logonDiv" class="menu-div" style="position:absolute;display:none;z-index:100; padding: 10px; width: 180px;margin:30px 0 0 65px;">';
		tmp += '<form id="form1" name="form1" method="post" action="http://study.yoao.com/login.asp">';
		tmp += '<TABLE class=top cellSpacing=0 cellPadding=2 width=100% align=center border=0><tr><td>用户名:<input type="text" size=24 name="username"/></td></tr>';
		tmp += '<tr><td>密　码:<input type="password" size=24 name="password"/>';
		tmp += '<input type="hidden" name="url" value="'+window.location+'" ></td></tr>';
		tmp += '<tr><td>　　　 <input type="submit" value="登 陆" class="loginbutton" style="width:50px;text-align:center;"/> <input type="button" value="取 消"  class="loginbutton" style="width:50px;text-align:center;" onclick="mclick();"/></td></tr></table>';
		tmp += '</form>';
		tmp += '</div>';
		
		document.write(tmp);
	}
}


function mclick()
{
	var obj = document.getElementById("menu_logonDiv");
	if(obj.style.display == "none")
	{
		obj.style.display = "";
	}
	else
	{
		obj.style.display = "none";
	}
}

getLoginDiv();