var doPopUp2X = (screen.width/2)-310;
var doPopUp2Y = (screen.height/2)-300;
var pos = "left="+doPopUp2X+",top="+doPopUp2Y;

function doPopUp2(){
doPopUp2Window = window.open("formlottery.html","lotteryform","scrollbars=yes,width=640,height=500,"+pos);
}