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javascript show hide error

victorpJul 11 2006 — edited Oct 15 2006

Based on a value from my radio group, I want to either show or hide a text item. Against the radio group in the HTML Form Elements Attributes I have put 
onchange="fn_showhide(this)"
 
in my .js file I have added the following function 
function fn_showhide(itemtohide) 
{ 
 
var item1 = document.getElementById(itemtohide).value; 
var el=html_GetElement(itemtohide); 
 
if (item1=='SA'){ 
html_HideElement(el); 
}else{ 
html_ShowElement(el); 
}; 
} 
 
when i change the radio I get a page error (javascript) and it is something like syntax error, object expected. can anyone spot where I have gone wrong? I have looked at other examples in the forum and they look very similar so can't figure it out. thanks

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Locked on Nov 12 2006

Added on Jul 11 2006

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