function show(id) {
    window.document.getElementById(id).style.visibility = "visible";
    window.document.getElementById(id).style.display = "block";   
}

function hide(id) {
    window.document.getElementById(id).style.visibility = "hidden";
    window.document.getElementById(id).style.display = "none";   
}

function swap_i(name, to) {            
     document.images[name].src = to; 
          
}

function load_i()
{
    document.loadimages = new Array();
 
    if(document.images)
    {
        for(var i = 0; i < load_i.arguments.length; i++)
        {
            document.loadimages[i] = new Image();
            document.loadimages[i].src = load_i.arguments[i];
        }
    }
}