function getCenter(pwidth,pheight){
	wwidth=screen.width;
	wheigth=screen.height;
	lpos= (wwidth - pwidth)/2;
	tpos= (wheigth - pheight)/2;
	return lpos, tpos;
}
function PopItUp(src,w,h,s,r) {
	s ? w=w+17 : null;
	getCenter(w,h);
	Popwin = window.open(src,"popwin","width=" + w + ", height=" + h + ", left="+ lpos +", top="+ tpos +";  scrollbars="+s+", resizable="+r+", copyhistory=0");
	Popwin.focus();
    return false;
}