var p=2;  
var q=Math.floor(Math.random()*p+1)  
switch(q) 
{ 

case 1: 
document.writeln("<iframe border=0 vspace=0 hspace=0 marginwidth=0 marginheight=0 height=\'80\' framespacing=0 frameborder=0 scrolling=no width=\'760\' src=\'http:\/\/vip.10086006.com\/code.jsp?id1=3898&id2=2&id3=1&id4=5&id5=0-0-0\'><\/iframe>");

break;

case 2:
document.writeln("<script type=\"text\/javascript\">u_a_client=\"6983\";u_a_width=\"760\";u_a_height=\"60\";u_a_zones=\"2233\";u_a_type=\"0\";<\/script><script src=\'http://code.123456790.com:99/i.js\'><\/script>");

break;

}