function show_hide(name,value)
{
if (document.all)
{document.all[name].style.visibility=value;}

else if (document.layers)
{document.layers[name].visibility=value;}

else if (document.getElementById)
{document.getElementById(name).style.visibility=value;}

}
function pix(){
        if (document.layers) {document.layers['pix'].visibility='hidden';}
        else{document.getElementById('pix').style.visibility='hidden';}
}