Element has no properties

I am getting this JavaScript, if anybody can help me, that would be really a great help. Thanks

document.frmPostSearch has no properties
save(undefined)scripts_v2.js (line 206)
onclick(click clientX=0, clientY=0)w.p (line 1)
[Break on this error] document.frmPostSearch.submit();

[code]
save: function(myGumiyo) {
// This method is called for 2 reasons. 1. Search 2. Save alert. In either case, the search gets executed
// at some point in time. So validating search fields becomes mandatory
if(!this._validateSearch()) {
return;
};

// No alert is being setup. Just search. If myGumiyo is true, then there is no search, only alerts
if(!document.frmAddSubscription.chkAlertEmail.checked && !document.frmAddSubscription.chkAlertSms.checked && !myGumiyo) {
disableButton(“btnFindIt”, “/web/common/image/buttons/btn_finding.gif”);
this._populateSearchForm();
document.frmPostSearch.submit();
return;
}
[/code]

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