function act(id)
{
	return document.getElementById(id);
}
//Ê÷×´½á¹¹
var myDocument = "";
function openInfo(id)
{
	if(myDocument == id)
	{
		if(act(myDocument).style.display == "none")
		{
			act(myDocument).style.display = "block";
		}else{
			act(myDocument).style.display = "none";
		}
		return false;
	}
	if( myDocument!=""){
		act(myDocument).style.display = "none";
	}
		act(id).style.display = "block";
	myDocument = id;
	return false;
}