var __w= null;
function xPopup(_p,_w,_h,_n,_l,_t,_f)
{
	var _wL = (_l!=null)? _l : (screen.width-_w)/2;
	var _wT = (_t!=null)? _t : (screen.height-_h)/2;
	__w=window.open(_p,_n,'width='+_w+',height='+_h+',top='+_wT+',left='+_wL+','+_f+'');
	if(__w!=null || __w != undefined){if(parseInt(navigator.appVersion) >= 4) __w.window.focus();}
}