dynamic dependent drop down box MySql

mdelac5

I have 3-level dynamic dependent drop down boxes that are all read from mysql and than 2nd and 3rd level's .style.display are set to 'none'

So I do not know how to pass Option Select (drop down box) value and use it as a name for an object with style.display property

Below i some code
<SELECT onChange="Change(this)">...

Below is script function (txt should return 2nd-level select name)

function Change(theSelect){
txt = theSelect.options[theSelect.selectedIndex].text;
if (txt.style.display=='none'){
txt.style.display='';
}
else{
txt.style.disply='none';
}

JavaScript Error message is 'txt.style.display' is null or not an object. I think here are some variable type issuses but cannot figure which. Finnaly, when I change txt with one of 2nd-level select names script works -

Thanks

Marko

Roger_Ramjet

Search the forums, this one has popped up many times. At least 2 previous thread include a link to a pre-coded solution.