Getting IE Error in this code please help

hello

can some one help me i get a error from this code in IE

function agreeTerms()
{
document.getElementById("upload").disabled=false
document.getElementById("checkBox").checked=true
}
function denyTerms()
{
document.getElementById("upload").disabled=true
document.getElementById("checkBox").checked=false
}

Code (markup):

any idea whats wrong ?

 

What error do you get?

 

'document.getElementById(...)' is null or not an object

and the checkbox is like this

	<input type="checkBox" onclick="if (this.checked) {agreeTerms()} else {denyTerms()}">

Code (markup):

 

You would need to have it be:

<input id="checkBox" type="checkBox" onclick="if (this.checked) {agreeTerms()} else {denyTerms()}">

Code (markup):

to use getElementById() correctly.