DomHelper insertHtml method not working in IE6

[dotnetCarpenter]

I'm having problems with insertAdjacentHTML (via the DomHelper) in IE6. I've made a wizard that renders forms on the pages (hidden tabs) and the render method fails. I've read on MSDN (http://msdn2.microsoft.com/en-us/library/ms536452.aspx) that the document has to be fully loaded but even if I load my wizard from the onload event it doesn't work. I've experimented with putting the load script tag different places in the page and tried to use this bit Ext.EventManager.addListener("body", "load", Wizard.init); but in vain. What should I do?
Can I halt the load of the script in an Ext way or what?

Thanks in advance!!
BTW maybe the DomHelper insertHtml method should take care of this?