NewImg = new Array('file1.jpg','file2.jpg','file3.jpg');
//Starting image is Selected
var StartFile = '<?php echo $filename; ?>';
for(var i in NewImg) {
	File = NewImg[i].split('/');
	File = File.pop();
	if(File == StartFile) {
		break;
	}

}
document.write(i);
var ImgNum = i;
var ImgLength = NewImg.length - 1;