function setLayerVis(id,v)
{
    var vis = "visible";
    if (!v)
        vis="hidden";

    var o = document.getElementById(id);

    if (o!=null)
    {
        o = o.style;
        if (o!=null)
        {
            if (ns)
                o.visibility = vis;
            else
                o.visibility = vis;
        }
    }
}


function cis(id, src)
{
    var o = document.getElementById(id);

    if (o!=null)
    {
		o.src = src;
	}
}



function preloadImages() 
{
    if(document.images)
    { 
	if(!document.preloaded) 
	    document.preloaded=new Array();

	var args=preloadImages.arguments; 
	var j=document.preloaded.length;

	for(var i=0; i<args.length; i++)
	{
	    document.preloaded[j] = new Image; 
	    document.preloaded[j++].src = args[i];
	}
    }
}