dojo - Uncaught ReferenceError: require is not defined, I am using dojo1.7.2 -

i using dojo1.7.2 got firebug error: uncaught referenceerror: require not defined

here piece of code:

<script type="text/javascript" src="../js/release/dojo/dojo.js"   data-dojo-config="packages:[ {'name':'com','location':'/myapp/js/com'}], async: false, parseonload: true, isdebug: true"> </script> <script language="javascript" type="text/javascript">     require(['dojo/dojo', "dijit/dijit", "dojox/dojox"], function () {     require(["dojox/mobile", "dojo/parser"], function(mobile, parser){         })     }); </script> 

where did wrong here? thank in advance.

could error loading dojo src specified, don't know folder structure, can't tell.

<script language="javascript" type="text/javascript">     require(["dojox/mobile", "dojo/parser"], function(mobile, parser){         alert("hi");     }); </script> 

here's fiddle of working http://jsfiddle.net/p4bvs/1/

this outer require ( require(['dojo/dojo', "dijit/dijit", "dojox/dojox"] ) not required , though not causing error.