[Zope] prevent quoting in tal:attributes

[Milos Prudek]

How can I prevent quote escaping in tal:attributes? My attribute 
contains many quotes itself, and ZPT automatically escapes them.

Details:

I want to calculate the onMouseOver attribute of <img>. This is the 
desired result:

onMouseOver="MM_swapImage('usability', '', '/usability_on_cs.gif',0)"

You see that there are many quotes... This is the Python Script excerpt 
which calculates the onMouseOver string:

## 'name' and 'url_on' are properly calculated...
item['onmouseover']='MM_swapImage("' +name+ '", "", "' +url_on+ '", 0)'

The result of this when rendered via ZPT is this:

onmouseover="MM_swapImage(&quot;contacts&quot;, &quot;&quot;, 
&quot;/contacts_on_cs.gif&quot;, 0)"

I need to change those &quot; back to single quotes. In tal:replace I 
could use the "structure" modifier, but it does not work for tal:attributes.

-- 
Milos Prudek
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