[Zope] form variable types conflicts with javascript

Form type variables are great, but it causes a problem with Javascript. Example: <input name="default" type="checkbox" onClick="setDefault(this,this.form.name:list)"> <input name="name:list" type="text"> This doesn't work, as Javascript won't recognize name:list as a variable name when calling setDefault. I've tried various combinations with no such luck. Any suggestions? Thanks, Albert