I am using Bootstrap v2.0.2 . Below is the navigation bar I am building for my website

The search consists of three fields
1) Combo box or any drop down
2) search input text field
3) Search icon ( click-able )
.
Here is the fiddle for above screen shot (Please open it in firefox)
Is there any way I can make combobox looks like part of text input ( now two looks different fields) and in place of Search2 showing Search icon which can be click-able ( like in facebook) ?
If I use below lines , I am just getting blank field in place of icon .
<span class='add-on' style="float: right"> <i class="icon-search"></i> </span>
Thank You all
Check http://jsfiddle.net/krg78/2/
You can make combobox looks like part of text input by adding position relative to combobox and moving it on into input: