// JavaScript Document
function returnObj( id )
{
    if (window.document.getElementById)
        var returnVar = window.document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}

function show_div(id)
{
var obj=returnObj(id);
obj.style.display="block";
obj.style.visibility="visible";
}

function hide_div(id)
{
var obj=returnObj(id);
obj.style.display="none";
obj.style.visibility="hidden";
}