get hash variable from url

i have a set of tabs that are using javascript DHTML
when a tab is clicked it writes a hash to the end of the url like
#1_3 = 3rd tab
how can i get the tab number in a coldfusion variable
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RG_ENTConnect With a Mentor Commented:
if I understand the question correctly, and aside from Mr Nil's response, what about just referring to it as "url.crm_page" to get "#1_3"?  Or is it the "_3" that you're after?

Even if it's DHTML, if the code is setting an URL variable, you should still be able to reference it without a page reload.
As far as I'm aware you can't.....

The other thing to note is that if you are using dhtml to change tabs it is likely that the page will not be re-requested from the server in order to display the new tab.
If this is the case then ColdFusion will be unaware of the change of tab.

What is it that you are actually trying to achieve?
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