function Window_Open(windowName, URL, targetName, windowWidth, windowHeight, windowFeatures)	{

		str = 'width=' + windowWidth + ',height=' + windowHeight;

		str = str + ",";

		str = str + "left=" + (screen.width / 2 - windowWidth / 2) + ",top=" + (screen.height / 2 - windowHeight / 2 - 40);

		if (windowFeatures != null)

			str = str + ",";

		windowFeatures = str + windowFeatures;

		eval(windowName + "=window.open('" + URL + "','" + targetName + "','" + windowFeatures + "')");

	  }