Jquery pop out effect

JavaScript
1

Hi I followed a tutorial and managed to get this popout effect on my site using jquery.

site

When you hover over a brand it pops out with a white square background, when you hover off, it returns to its normal state.

Now each icon links to a different page which is great but the glitch i have is that when you go back (using the browser window buttons) to the original page the icon that was clicked is still popped out. I want when the user returns back to this page for the icon that was pressed in the first instance to return to its normal state. I have only noticed this happening in firefox thus far, in IE its ok.

Here is the code im using:


<script type="text/javascript"> 
$(document).ready(function(){
 
//Larger thumbnail preview 
 
$("ul.thumb li").hover(function() {
	$(this).css({'z-index' : '10'});
	$(this).find('img').addClass("hover").stop()
		.animate({
			marginTop: '-60px', 
			marginLeft: '-80px', 
			top: '50%', 
			left: '50%', 
			width: '150px', 
			height: '118px',
			padding: '0' 
		}, 200);
	
	} , function() {
	$(this).css({'z-index' : '0'});
	$(this).find('img').removeClass("hover").stop()
		.animate({
			marginTop: '0', 
			marginLeft: '0',
			top: '0', 
			left: '0', 
			width: '70px', 
			height: '55px', 
			padding: '0'
		}, 400);
		return false;
});
 
 
 $(".thumb li img").click(function(){
 	$(this).css({'z-index' : '0'});
	$(this).find('img').removeClass("hover").stop()
		.animate({
			marginTop: '0', 
			marginLeft: '0',
			top: '0', 
			left: '0', 
			width: '70px', 
			height: '55px', 
			padding: '0'
		}, 400);
});
});
</script>

I hope im making sense of what im trying to say! Any advice/suggestions will be greatly appreciated, thanks.