//Draw Popup

function popup(page,x,y,scroll) {

var winx = x;
var winy = y;
var winpage = page;
var winscroll = scroll;
if (winscroll == 'yes') {winx=winx+17};

var myx = (screen.width/2)-(winx/2);
var myy = ((screen.height/2)-(winy/2))-50;
var pos = "left="+myx+",top="+myy;

myWindow = window.open(winpage,"","scrollbars="+winscroll+",width="+winx+",height="+winy+","+pos);
}