how to stop HTML character conversion in javascript code blocks

[Lance]

Hi,
When I programattically add javascript to an HTML element using the
codebehind, any ampersands get converted to HTML character codes which ruins
some logic elements. eg

THIS
tb.Attributes.Add("onkeydown", @"if ((event.which && event.which == 13)...

TURNS INTO
tb.Attributes.Add("onkeydown", @"if ((event.which && event.which ==
13)...

How can I stop this from happening? Is there some sort of switch to use?

Thanks,
Lance