$(document).ready(function () {	
	// Pre-load hover images	
	var imageArray = new Array();
	$('img[hover]').each(function (i) {
		var img = new Image();
		img.src = $(this).attr('hover');
		imageArray.push(img);
	});	
	
	// Apply image hovering effect for any image with a 'hover' attribute - hover attribute should contain URL of alternative image		
	$('img[hover]').hover(function() {
        var currentImg = $(this).attr('src');
        $(this).attr('src', $(this).attr('hover'));
        $(this).attr('hover', currentImg);
    }, function() {
        var currentImg = $(this).attr('src');
        $(this).attr('src', $(this).attr('hover'));
        $(this).attr('hover', currentImg);
    });	
});