function openf(theURL, wname, W, H) {
//确定弹出窗口的位置
	var windowW = W;
	var windowH = H;
	var windowX = Math.ceil( (window.screen.width  - windowW) / 2 );
	var windowY = Math.ceil( (window.screen.height - windowH) / 2 );
//确定浏览器的版本
		splashWin = window.open(theURL , wname, "fullscreen=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width="+windowW+",height="+windowH);
//调节浏览器的位置和窗口大小
	    splashWin.moveTo  ( Math.ceil( windowX ) , Math.ceil( windowY ) );	
		splashWin.resizeTo( Math.ceil( W )       , Math.ceil( H ) );
		splashWin.focus();
		}