function setTab(name,cursel,n){
 for(i=1;i<=n;i++){
  var menu=document.getElementById(name+i);
  var con=document.getElementById("con_"+name+"_"+i);
  menu.className=i==cursel?"tab_active":"tab_normal";
  con.style.display=i==cursel?"block":"none";
 }
}
//ÏÔʾÒþ²Ø²ã
function showhidendiv(id)
{
	var divobj = document.getElementById(id);
	if (divobj.style.display == "none")
	{
		divobj.style.display = "";
	}
	else
	{
		divobj.style.display = "none";
	}
}