var m=1;
var n=Math.floor(Math.random()*m+1);
switch(n)
{
case 1:
document.writeln("<a href=\"http:\/\/ie.115.com\/?114code_utf8\"><img src=\"http:\/\/ie.115.com\/static\/images\/banner\/tg\/46860_1.gif\" \/><\/a>");
break;
}