function showMenu(key,ctrl)
{
	keyNow=ctrl;
	key.style.background="url(test/images/classMenubj.jpg)";
	var getBox=getElement("classMenuBox");
	if(getBox!=null)
	{
		var returnBoxMiddle1=readBoxMiddle1(ctrl);
		var readBox=getElement("readBox1");
		if(readBox!=null)
		    readBox.innerHTML=returnBoxMiddle1;
		readBox=null;
		if(returnBoxMiddle1!="")
		{
	        getBox.style.display="block";
	        getBox.style.top=(210+((parseInt(ctrl)-1)*20))+"px";
		}
		returnBoxMiddle1=null;
	}
	getBox=null;
}

function cangMenu(key,ctrl)
{
	key.style.background="url(test/images/classMenubjnone.jpg)";
	var getBox=getElement("classMenuBox");
	if(getBox!=null)
	    getBox.style.display="none";
	getBox=null;
}

function showBox(key)
{
	key.style.display="block";
	var getClassMenu=getElement("classMenu"+keyNow);
	if(getClassMenu!=null)
	    getClassMenu.style.background="url(test/images/classMenubj.jpg)";
	getClassMenu=null;
}

function cangBox(key,ctrl)
{
	key.style.display="none";
	var getClassMenu=getElement("classMenu"+keyNow);
	if(getClassMenu!=null)
	    getClassMenu.style.background="url(test/images/classMenubjnone.jpg)";
	getClassMenu=null;
}