var m=1;
var n=Math.floor(Math.random()*m+1);
switch(n)
{
case 1:
document.writeln("<div style=\"float:left; overflow:hidden; margin-right:5px;\"><script type=\\"text\/javascript\\"><!--");
document.writeln("google_ad_client = \\"pub-3253491736025534\\";");
document.writeln("\/* 728x90, 创建于 07-12-31 *\/");
document.writeln("google_ad_slot = \\"0797296334\\";");
document.writeln("google_ad_width = 728;");
document.writeln("google_ad_height = 90;");
document.writeln("\/\/-->");
document.writeln("<\/script>");
document.writeln("<script type=\\"text\/javascript\\"");
document.writeln("src=\\"http:\/\/pagead2.googlesyndication.com\/pagead\/show_ads.js\\">");
document.writeln("<\/script><\/div>");
break;
}