var ranimg = new Array();
ranimg[0]="images/bgAsideGeneral/300.jpg";
ranimg[1]="images/bgAsideGeneral/301.jpg";
ranimg[2]="images/bgAsideGeneral/302.jpg";
ranimg[3]="images/bgAsideGeneral/303.jpg";
ranimg[4]="images/bgAsideGeneral/304.jpg";
ranimg[5]="images/bgAsideGeneral/305.jpg";
var mai = Math.floor(ranimg.length*Math.random());
ranimg = ranimg[Math.floor(mai)];
document.writeln('<style type="text/css">'+"\n"+'<!--'+"\n"+'body{background:url("'+ ranimg +'") no-repeat left top;}'+"\n"+'-->'+"\n"+'</style>');