var xleft=0;
var ytop=0;

function OpenPopUp(url, w, h) {
	chkMiddleWin(w,h);
	var PopupWindow=null;
	settings='width='+ w + ',height='+ h + ',top='+ ytop +',left='+ xleft +',location=no,directories=no,menubar=no,toolbar=no,status=yes,scrollbars=yes,resizable=yes,dependent=no';
	PopupWindow=window.open(url,'xsPopUp',settings);
	PopupWindow.focus();
}

	
function chkMiddleWin(xsize1,ysize1) {
    xwinsizem = 785;
    ywinsizem = 430;
    if (screen) {
		xwinsizem = screen.availWidth;
		ywinsizem = screen.availHeight;
		if (xwinsizem >= 2000 && ywinsizem <= 1200) xwinsizem = xwinsizem/2;
    }
	xleft = (xwinsizem/2)-(xsize1/2);
	ytop = (ywinsizem/2)-(ysize1/2);
	xleft = (xwinsizem >= 1024) ? xleft : '0';
	ytop = (ywinsizem >= 740) ? ytop : '0';
}