i`m pretty new in jquery and i`m trying to make a button to toggle the background image. It works fine in Firefox but not in Safari. I hope someone can help me to get it working....

2.   <script type="text/javascript">
3.     $("#togglebutton").toggle(
4.       function () {
5.         $("#pagewrapper").css({"background":"url(images//bg_wrapper_2.jpg"});
6.       },
7.       function () {
8.         $("#pagewrapper").css({"background":"url(images//bg_wrapper_1.jpg"});
9.       }
10.     );