function openWindow( URL, winName, width, height, center, showMenu, showScrollbars )
{
	  xposition=0; yposition=0;
	    if ((parseInt(navigator.appVersion) >= 4 ) && (center)){
	        xposition = (screen.width - width) / 2;
	        yposition = (screen.height - height) / 2;
	    }
	    args = "width=" + width + ","
	    + "height=" + height + ","
	    + "location=0,"
	    + "menubar=" + (showMenu != null ? showMenu : "0") + ","
	    + "resizable=1,"
	    + "scrollbars=" + (showScrollbars != null ? showScrollbars : "1") + ","
	    + "status=0,"
	    + "titlebar=0,"
	    + "toolbar=0,"
	    + "hotkeys=0,"
	    + "screenx=" + xposition + ","  //NN Only
	    + "screeny=" + yposition + ","  //NN Only
	    + "left=" + xposition + ","     //IE Only
	    + "top=" + yposition;           //IE Only


	  window.open( URL , winName , args );
}