newWin=0;
function ow (x,y,xpos,ypos,file) {

xpos = window.screen.availWidth/2 - x/2;
ypos = window.screen.availHeight/2 -y/2;

if (newWin) newWin.close();
newWin=window.open(file, "", "location=0, toolbar=0, directories=0, status=0, menubar=1, scrollbars=1, resizable=0, width="+x+", height="+y+", left="+xpos+", top="+ypos);
newWin.focus();
}

var img1=new Image;
var img2=new Image;
var img3=new Image;
var img4=new Image;
var img5=new Image;

for (var i=1; i<6; i++) eval("img"+i+".src='/img/menu"+i+"a.gif';");
var cur=0;
function show(num) { if (num!=cur) document.images["i"+num].src="/img/menu"+num+"a.gif"; }
function hide(num) { if (num!=cur) document.images["i"+num].src="/img/menu"+num+".gif"; }