var m=1;
var n=Math.floor(Math.random()*m+1);
switch(n)
{
case 1:
document.writeln("<a href=\"http://weather.cn.yahoo.com/\" target=\"_blank\" onclick=\"logad('53');\"><IFRAME marginWidth=0 marginHeight=0 src=\"..\/tq.htm\" frameBorder=0 width=142 scrolling=no height=60 allowTransparency><\/IFRAME></a>");break;
}