How Can I Add a Body Class in Magento Go When the Browser is IE8? [closed]

Question

I am using the following Custom Layout Update XML in Magento Go to add a body class if the browser is IE8. Currently this code adds the class for every browser instead of only IE8. How can I write this so it only adds the class for IE8?

<reference name="root">
  <action method="addBodyClass">
    <classname>ie8</classname>
    <if>IE 8</if>
  </action>
</reference>

Answer 1

[Edit]

Add the js below in the footer. and it should work.

if (navigator.appName == "Microsoft Internet Explorer") {
    var ua = navigator.userAgent;
    var re = new RegExp("MSIE ([0-9]{1,}[.0-9]{0,})");
   //If the regEx through the userAgent is not null
   ieVersion = -1;
   if (re.exec(ua) != null) {
      //Set the IE version
      ieVersion = parseInt(RegExp.$1);
   }
   if (ieVersion == 8){
      $$('body')[0].addClassName('ie8');
   }
}

I don't have experience with Magento GO but if it's similar to CE or EE you should have a textarea in the config panel where you can add miscellaneous javascript.

[OLD answer for Magento CE or EE] What you are trying won't work. The addBodyClass meyhod acceps only one paramerter... the class name.
What you can do is to create a js file with this content:

document.observe("dom:loaded", function() {
    $$('body')[0].addClassName('ie8');
});

Let's call this file 'ie8.js' and place it in the js folder. Now in your layout file add this:

<default>
    <reference name="head">
        <action method="addItem">
           <type>js</type>
           <name>ie8.js</name>
           <params/><if>IE 8</if>
        </action>
    </reference>
</default>

Clear the cache and give it a go.