var m=1;
var n=Math.floor(Math.random()*m+1);
switch(n)
{
case 1:
document.writeln("<a href=\"http:\/\/www.wt365.com\/url-submit\/\" target=\"_blank\"><img src=\"http:\/\/www.choufengla.com\/data\/attachment\/portal\/201107\/22\/184435dralohkx0afo3tll.gif\" height=\"60\"width=\"490\"><\/a>");
break;
}