javascript go to URL script

Hello,

I need some help re-writing a script for our knowledge base, I want the user to be able to press enter via the keyboard instead of the Query button to quickly navigate to the desired solution.

When the user clicks enter the on keyboard, it opens up the following page.
http://packetman.com.au/kb/?Dest=1 but I want the user to go to http://packetman.com.au/kb/entry/1/

Here is the code.

How would I do this?

function GoToURL(j) {
  window.status=('Extracting')
  
var URLis;
 URLis = document.URLframe.Dest.value
  
   if (URLis == "" || URLis.length <= 0)
           { 
     j.value = "Try Again"
      alert('You must enter valid Article ID');
         window.status=('Missing data or Invalid. Try again?.')
           } 
    else
        {
 j.value = "Finding KB" + URLis   
 var location=("http://packetman.com.au/kb/entry/" + URLis +"/");
         this.location.href = location;
window.status=('Connecting to ' + URLis + '  Please wait........');
        }
        }
 
<form name="URLframe"> 
<b>KB Number</b> 
<input type="TEXT" name="Dest" size="5" maxlength="5">
<input type="Button" name="Go to" value="Query" onClick="GoToURL(this)">
</form>

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