var ns6=document.getElementById&&!document.all;
var ie4=document.all;
var ns4=document.layers;

function show_panel_menu(id)
{

document.getElementById("tab_panel_menu0").style.display = "none";
document.getElementById("tab_panel_menu1").style.display = "none";
document.getElementById("tab_panel_menu2").style.display = "none";
document.getElementById("tab_panel_menu3").style.display = "none";



document.getElementById("tab_panel_menu"+id).style.display = "block";


}