// Preload rollover images
$( document ).ready ( function ()
	{
		$( ".roll" ).find ( "img" ).each ( function ( i )
			{
				temp = this.src;
				pre = temp.replace ( /_off/, '_on' );
				preload_image_object = new Image ();
				preload_image_object.src = pre;
			}
		);
	}
);

// Do rollovers
$( document ).ready ( function ()
	{
		$( ".roll" ).hover ( function ()
			{
				curr = $( this ).find ( "img" ).attr ( "src" );
				over = curr.replace ( /_off/, '_on' );
				$( this ).find ( "img" ).attr ({ src: over });
			}, function () {
				$( this ).find ( "img" ).attr ({ src: curr });
			}
		);
	}
);