//页面的首部的圆角效果
try
{
var ss=document.styleSheets[0]; 
var rules = ss.cssRules?ss.cssRules:ss.rules;
var b=rules[6].style["height"];
if (b=="1px") {
        Nifty("div#divHeader", "top transparent ");
        Nifty("div.OtherTabs", "top");
        Nifty("div.SelectedTab", "top");
    }
cssdropdown.startchrome("chromemenu")
}
catch (ex)
{}