Need to combine two scripts

Hello,

I have two scripts that I would like to combine.  The first does tow things.  It keeps IE users from using the enter key to submit a form and it disables the submit and reset buttons after a user has clicked submit.  The second script confirms whether or not the user actually wishes to submit the form.  The problem is that if the user decides they do not wish to submit the form, the submit button is still disabled.  Can the two scripts be combined so that if they choose not to submit the form then the button is reactivated?  Any help is greatly appreciated.  Thank you.

<SCRIPT LANGUAGE="JavaScript">
<!--
function onKeyPress (){
var keycode;
if (window.event) keycode = window.event.keyCode;
else if (e) keycode = e.which;
else return true;
if (keycode == 13){
return false
}
return true
}
document.onkeypress = onKeyPress;
function submitonce(theform){
if (document.all||document.getElementById){
for (i=0;i<theform.length;i++){
var tempobj=theform.elements[i]
if(tempobj.type.toLowerCase()=="submit"||tempobj.type.toLowerCase()=="reset")
tempobj.disabled=true
}
}
}
// -->
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
<!--
function confirmSubmit()
{
var agree=confirm("Are you sure you wish to continue?");
if (agree)
return true;
else
return false;
}
// -->
</SCRIPT>