var BGImgAry=new Array('main.jpg','2.jpg','3.jpg','4.jpg','5.jpg','6.jpg','7.jpg','8.jpg');
function BBG(){
R=Math.floor(Math.random()*10)%BGImgAry.length
BG=document.getElementsByTagName('BODY')[0];
BG.style.backgroundImage="url('images/backgrounds/"+BGImgAry[R]+"')";
BG.style.backgroundPosition='top center';
BG.style.backgroundRepeat='no-repeat';
BG.style.backgroundAttachment='scroll';
}