Basic Ajax xmlhttp.open

[dizzy1]

 

I have a basic AJAX feature:  On one page page a user selects from a drop down box and then onchange receives another drop down box with data populated from a DB. 

 

 

The feature works perfectly, However when I change the url from www.mysite.com to mysite.com it doesn't work, my guess is that its the path. Any Suggestions.

 

 

 xmlhttp.open("GET","/ajaxSearch/getData.php?car="+car,true);