on blur change text box colour???

Anyone know how to do it? That when a user selects clicks into a text box, the "class" changes to another value which has a different background colour set. I tried a view javascripts like change property in Dreamweaver MX but to no avail. Anyone know the actual script as I am not a javascript writer.

Thanks

Dave

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David Behan - www.site-manager.com/af.asp?a=11&l=1tds9p6x2

<INPUT onBlur="this.style.backgroundColor='#ffffff'" onFocus="this.style.backgroundColor='#ffffcc'" onMouseOver=this.focus() style="font-size:8pt;BACKGROUND-COLOR:#ffffff; BORDER-BOTTOM: #111111 1px dotted; BORDER-COLLAPSE: collapse; BORDER-LEFT: #111111 1px dotted; BORDER-RIGHT: #111111 1px dotted; BORDER-TOP: #111111 1px dotted" maxLength=16 name=username size=12 type=text>