Detecting Internet Explorer More Effectively
http://msdn2.microsoft.com/en-us/library/ms537509.aspx
Understanding User-Agent Strings
http://msdn2.microsoft.com/en-us/library/ms537503(VS.85).aspx
About Conditional Comments
http://msdn2.microsoft.com/en-us/library/ms537512(VS.85).aspx

 

怎麼使"<div>"顯示到dropdownlist或listbox 的前面？
在div裡加iframe:
<div>
<iframe src="javascript:false" style="Z-INDEX:-1; FILTER:progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0); LEFT:0px; VISIBILITY:inherit; WIDTH:158px; POSITION:absolute; TOP:0px; HEIGHT:110px">
</iframe>
</div>