function popup(adres, baslik, w, h)
{
var win= null;
var x=(screen.width-w-10)/2;
var y=(screen.height-h-50)/2;
var settings='toolbar=0, scrollbars=1, location=0, statusbar=0, menubar=0, resizable=1,';
settings+='width='+w+',';
settings+='height='+h+',';
settings+='left='+x+',';
settings+='top='+y;
win = window.open(adres,baslik,settings);
if(parseInt(navigator.appVersion)>=4){win.window.focus();}
}

function menugizle(mnr) {
document.getElementById(mnr).style.display="none"; }
function menugoster(mnr){
document.getElementById('menu1').style.display="none";
document.getElementById('menu2').style.display="none";
document.getElementById('menu3').style.display="none";
document.getElementById('menu4').style.display="none";
document.getElementById('menusale').style.display="none";
document.getElementById('menusup').style.display="none";
document.getElementById('menucon').style.display="none";
document.getElementById(mnr).style.display="inline"; }