I have select list which submits the page and the page is then re-rendered with various fields hidden depending on the value of the select list. There is a button at the top of the page which is causing problems if it is pressed before the page is fully rendered.

Is there a way in javascript that I can on press of the button I can tell if the page is fully rendered?

Or is there a better way to do this?

p.s we don't use jquery but do use prototype.

Thanks

Dougal.

This is a nice description of events in prototype.

Thanks for the link but still don't quite get how to tell on an onclick of a button whether or not the page is loaded.

You can set a variable to 0 at the start of your page, and to 1 when the page has loaded. On the click of your button, check this variable.

Thanks.

last question - where would I set the variable in? I do not want it to be an item on my page.

Okay, then disable the button when the page starts, and enable it when the page is done loading.