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","toolbar=0,width=" + w + ", height=" + h + ", left="+ lpos +", top="+ tpos +"; location=0, directories=0, status=1, scrollbars="+s+", menubar=0, resizable="+r+", copyhistory=0");
	Popwin.focus();
    return false;
}