function preload(images) {
    if (document.images) {
        var i = 0;
        var imageArray = new Array();
        imageArray = images.split(',');
       for(i=0; i<=imageArray.length-1; i++) {
            var imageObj = new Image();
        	imageObj.src="images/" + imageArray[i];
			//document.write(imageObj.src + '<img src="' + imageObj.src + '" /><br />'); // Write to page (uncomment to check images)
}	}	}