// 显示隐藏左侧菜单
function showsubmenu(sid)
{ 
objdiv = document.getElementById("submenu"+sid);
if(objdiv.style.display == "none"){
	objdiv.style.display = "block";	
	}
else{
	objdiv.style.display = "none";
	}
}
//返回列表时的显示和隐藏功能
function Showbackslist(sid)
{ 
objdiv = document.getElementById("backslist"+sid);
obja = document.getElementById("aw"+sid);
obja.style.cursor="pointer";
if(objdiv.style.display == "none"){
	objdiv.style.display = "block";
	obja.innerHTML = "收起";
	}
else{
	objdiv.style.display = "none";
	obja.innerHTML = "展开";
	}
}