<!-- 

var image = new Array(); 

image[0] = 'hinhanh/background/truyenthong0001.jpg' ; 
image[1] = 'hinhanh/background/truyenthong0002.jpg' ; 
image[2] = 'hinhanh/background/truyenthong0003.jpg' ; 
image[3] = 'hinhanh/background/truyenthong0004.jpg' ; 


var index = Math.floor(Math.random() * image.length);
document.write('<style type="text/css"> td.background { background-image: url('+ image[index] +') } </style>'); 
//--> 
