var theURL = window.location.search;
var thePosition = theURL.indexOf("=") + 1;
// var theCat = theURL.substring(thePosition, theURL.length); //
function hide_all() {
	var myDiv = document.getElementById('Div1');
    myDiv.style.display = "none";
	
    var myDiv = document.getElementById('Div2');
    myDiv.style.display = "none";
    
	var myDiv = document.getElementById('Div3');
    myDiv.style.display = "none";

	var myDiv = document.getElementById('Div4');
    myDiv.style.display = "none";
}

function show_hide(theDiv){
	 hide_all();
     var myDiv = document.getElementById(theDiv);
	 myDiv.style.display = "block";
}