var imageInterval;
$(document).ready(function(){                                   
    $(".swap_image").hover(function(){
        var id = $(this).attr("id").replace("scene_", "");    
        imageInterval = setInterval("swapImage(" + id + ")", 300);        
    }, function()    {
        clearInterval(imageInterval);         
    });   
});
/*
 * Swap between 3 images at the interval set on the document ready
 */
function swapImage(id)
{
    var obj = $("#scene_"+ id);
    var img = obj.find("img");
    var imgNum = parseInt(img.attr("alt"));    
    nextimgNum = imgNum + 1;
    nextimgNum %= 5;
    nextimgNum += 1;
    img.attr("alt", nextimgNum );
    var src = img.attr("src");
    var newsrc = src.replace("vid_" + imgNum, "vid_" + nextimgNum);             
    img.attr("src", newsrc);  
	

}
// JavaScript Document