// Copyright © 2002 by X2 Studios, Ltd., All Rights Reserved.
//
// You may incorporate this X2 Studios sample code into your own code
// without restriction. This X2 Studios sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "X2 Studios sample code" after having made changes.
//
// ************************
// layer utility routines *
// ************************

function getStyleObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} // getStyleObject

function changeObjectVisibility(objectId, newVisibility) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.visibility = newVisibility;
	return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
	return false;
    }
} // changeObjectVisibility

function moveObject(objectId, newXCoordinate, newYCoordinate) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.left = newXCoordinate;
	styleObject.top = newYCoordinate;
	return true;
    } else {
	// we couldn't find the object, so we can't very well move it
	return false;
    }
} // moveObject


function launchpopupscroll(url, name, width, height,scroll) {
   winSet = "toolbar=no,location=no,directories=no,menubar=no,scrollbars="+scroll+",resizable=no,status=yes";
   winSet += ",width="+width +",height="+height+",left="+(screen.availWidth-width)/2+",top="+(screen.availHeight-height)/2;
   mypopwnd = window.open(url, name, winSet);
   mypopwnd.focus();
  }

function launchpopup(url, name, width, height) {
   launchpopupscroll(url, name, width, height,"yes");
  }