Silly Question - Applying style tags via JavaScript

[JustinK101]

Hello, I have the following function which focuses a form element and trying to change the background color of the field when an error is detected. The focusing code works, but the background coloring doesnt, I am getting a js syntax error. Thanks.

[code]
function colorize_and_focus($field)
{
echo '<THIS IS JAVASCRIPT TAG, BUT I CANT POST THE CODE>
myFormObj = document.forms[0];
if((myFormObj.' . $field . '.type == "text") || (myFormObj.' . $field . '.type == "textarea") || (myFormObj.' . $field . '.type.toString().charAt(0) == "s"))
{
document.forms[0].' . $field . '.focus();
}
document.forms[0].' . $field . '.style.background-color=\'#FFFF00\';

  </END THIS IS A JAVASCRIPT TAG, BUT I CANT POST THE CODE>';
}
[/code]

[JustinK101]

Got it, I just did:

document.forms[0].className=\'myCSSClass\';