JavaScript - GetElementById Not Finding Control Generated

Jan 4, 2011

I am simply trying to store a label in a variable in javascript but for some reason this isn't working with document.getElementById('control');. I know my javascript is linking to my html file fine because everything else works.

Here is my javascript code:

function performEvapCooledCircuit(txt)
var error = document.getElementById('lblError');
if (txt.value == null || isNaN(txt.value))

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