如何做 透明的drop down menu

well..The onyl way you can accomplish this is by incorporating some CSS styles into your HTML. You can adjust transparency that way, but it will apply to everything within the cell.

css

table
{
filter:alpha (opacity=50);
}

if you wan to do it in mozilla, you need to use integer. The integer should be a number between zero and one.

-moz-opacity:integer .

For example

-moz-opacity:0.7