>I am trying to pass a value from a control into a stylesheet. Does any body know how to do this?

I'm no expert on XSLT but, I think you can do it by running the transformation again with a different value for the desired element. For example, do a .selectSingleNode("//@order-by") and change it's .value and then .transformNode with the new value sending the results to the appropriate object on your HTML.

The following lines work for me when changing sort orders:

sortField = xmlstyle.selectSingleNode("//@order-by");
sortField.value = "newfield";
target.innerHTML = xmldata.transformNode(xmlstyle.XMLDocument);

Where xmlstyle is the id of the stylesheet which returns a table and xmldata is the source xml. HTH