function popUpWindow(strURL, strTargetName, oWindow, strWidth, strHeight) {

	var strOptions = "left=200,screenX=200,top=100,screenY=100,channelmode=0,directories=0,height="+strHeight+",innerHeight="+strHeight+",width="+strWidth+",innerWidth="+strWidth+",hotkeys=0,location=0,menubar=0,titlebar=0,toolbar=0,resizable=1,status=0,scrollbars=1";

	// determine if the window is already open
	if (!(oWindow && oWindow.open && !oWindow.closed)) {
		oWindow = window.open("", strTargetName, strOptions);
	}
	
	// focus and set the new location
	if (oWindow && oWindow.open && !oWindow.closed) {
		oWindow.focus();
		oWindow.location.href = strURL;
	}
}