[Deff]

<style type="text/css">
div.full-active {
 clear:left;
}
</style>



<div>
<img src='preview-1.jpg' class='image preview'>
</div>

<script type="text/javascript">
$('img.image').click(function(){
	$(this).toggleClass('preview').toggleClass('full');
	$(this).parent().toggleClass('full-active');
	var a=$(this).attr('src');var b=a.replace('preview','full')
	if(a==b){b=a.replace('full','preview');}
	$(this).attr('src',b);
});
</script>