下面的JS代码在select列表变化时触发SetBeerIcon()函数,SetBeerIcon()函数可以根据select选择的值动态修改图片
... <script language="JavaScript" type="text/javascript" > function setBeerIcon() { var beerIcon = document.getElementById("beerIcon"); beerIcon.src = "images/"+getSelectValue("beer")+".jpg"; } </script> ... <img border="0" src="" id="brandIcon" alt="brand" /> <select name="beer" id="beer" onChange="setButton();setBeerIcon();"> <option value="--Select--">Select beer</option> <option value="heineken">heineken</option> <option value="sol">sol</option> <option value="amstellight">amstellight</option> <option value="coronalight">coronalight</option> <option value="coronaextra">coronaextra</option> <option value=""></option> </select>