I have been trying to prduce a simple module as a quick and easy methos of being able to customise JavaScript I use on existing sites I wish to port.

I picked on a simple Marquees script that uses a couple of Divs and is Initiated by a call to the window.onload=populateMarquee

This seemed to be straight forward enough so I added the code to load the script to the Private sub Page_Load 

Unfortunately this doesnt work - it seems the populat function isint called

I tried to see what was going on by viewing the page source generated and sving it as an htm file

This seems to run the JavaScript code perfectly well when it is viewed in Explorer

How do I get the window.onload funtion to fire or do i need to use a different method to do this from DotnetNuke

I have noticed some articles that suggest the preferred method is to ad the code entry point as an event - this appeals as I can write more modules to do a similar task (implmenting Javascript) and not have conflicts with initalising calls

Have you had a look at the ClientAPI document (page 6)? 

Another example of this functionality in DotNetNuke is found in how it allows for
multiple client side functions to subscribe to the body.onload event. When DNN wants
to set focus to a control when the body loads it will do so by utilizing the
AddBodyOnloadEventHandler method.  

Public Shared Sub AddBodyOnloadEventHandler(ByVal objPage As Page, ByVal strJSFunction As 
String) 
objPage Page object being rendered 
strJSFunction Javascript function to call 

This method is used in the SetFormFocus method found in the Globals.vb file.

ClientAPI.AddBodyOnloadEventHandler(control.Page, "__dnn_SetInitialFocus('" & 
control.ClientID & "');")