Some JS help please

[Bruce Sorge]

I am using this script:
<cfoutput>
<script type="text/javascript">
    var SiteContact = {};
    var SitePhone = {};
    <!--- Populate Site Contact Information --->
    <cfloop query="qSelectAllSites">
        SiteContact["#qSelectAllSites.SiteID#"] = 
'#qSelectAllSites.SiteContact#';
        SitePhone["#qSelectAllSites.SiteID#"] = 
'#qSelectAllSites.SitePhone#';
    </cfloop>

    // Listen for changes to the select box
    document.getElementById('Site_ID').onchange = function() {
        document.getElementById('SiteContact').value = 
qSelectAllSites[this.options[this.selectedIndex].value];
        document.getElementByID('SitePhone').value = 
qSelectAllSites[this.options[this.selectedIndex].value];
    }
</script>
</cfoutput>

Everything works OK except for the first document.getElementByID. I am 
getting the error message:

Error: document.getElementById("Site_ID") has no properties
Source File: http://10.120.5.30/tt/Restricted/CaseForm.cfm
Line: 78

The select is:
<cfselect name="Site_ID" id="Site_ID" query="qSelectAllSites" 
display="SiteName" value="SiteID"></cfselect>

So what am I missing here? Doesn't the 
document.GetElementByID('Site_ID')......... listen for the select list 
with the ID Site_ID?

Thanks,

Bruce

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to 
date
Get the Free Trial
http://ad.doubleclick.net/clk;192386516;25150098;k

Archive: 
http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:303611
Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm
Unsubscribe: 
http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4