XML Islands: how to avoid compatibility problems with other browers?

Could someone please indicate if it's possible avoid XML islands in HTML pages and obtain the same result? I have to load data from different XML files in HTML pages. I have used a XML island in the HTML page, in order to call the XML parser and load XML files. Moreover I have used JavaScript to walk through XML files and extract data. This works very well with Internet Explorer but it doesn't work - for example - with Mozilla. It's clear: the problem is the XML island.
Could someone please indicate another valid method to load data dinamicaly from XML files into HTML pages?
Many Thanks.

Piergiorgio Buongiovanni
piergiorgio_buongiovanni@hotmail.com

Google XMLHttp (that is what the grid uses) and then consider one of the cross-browser XML implementations such as http://jsxml.sourceforge.net/. If you go through the source for the grid, you can see how the grid creates an object to manipulate the data it retrieves through XMLHTTP.