function show( div_to_show ) {
            // Detect Browser
            var IE = (document.all) ? 1 : 0;
            var DOM = 0; 
            if (parseInt(navigator.appVersion) >=5) {DOM=1};
 // Grab the content from the requested "div" and show it in the "container"
            if (DOM) {
                var selected = document.getElementById(div_to_show)
                var viewer = document.getElementById("content_container")
                var text = selected.innerHTML;
                viewer.visibility = "hide";
                viewer.innerHTML=text
                viewer.visibility = "show";
            }
            else if(IE) {
                var text = document.all[div_to_show].innerHTML;
                document.all["content_container"].style.visibility = "hidden";
                document.all["content_container"].innerHTML=text
                document.all["content_container"].style.visibility = "visible";
            }
        }