function toggle(){
            
        var index = navigator.appName.indexOf("Explorer");
				
		if (index == -1) { //All Other
		    
		    if (document.getElementById("Categories").style.visibility == "collapse")
            {
                document.getElementById("Categories").style.visibility = "visible";
                document.getElementById("Categories").style.display = "block";
            } else {
                document.getElementById("Categories").style.visibility = "collapse";
                document.getElementById("Categories").style.display = "none";
            }
        }
        else { //Explorer
            
            if (document.getElementById("Categories").style.display == "none")
            {
                document.getElementById("Categories").style.display = "block";
            } else {
                document.getElementById("Categories").style.display = "none";
            }
        }
    }
    
    function MM_preloadImages() { //v3.0
        var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
        var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
        if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}