Hi Lynn,

You can execute your script onLoad by adding the following cross-browser code to the top of your Javascript file:

if (window.addEventListener)
{
    window.addEventListener("load", Your_Function_Name, false);
}
else if (window.attachEvent)
{
    window.attachEvent("onload", Your_Function_Name);
}

Just replace the Your_Function_Name with the name of the function you want to execute, no quotes or parens.

I'm not sure what I can explain.

The code above is Javascript that will run in the global space (outside a function), which will add a function to an event listener.
When the page loads, the javascript will run, and then your Javascript funtion will run.

If you want the details there is a good explaination here.

If there is a specific question I can answer that too.