common.js
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common.js
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	if(!dojo._hasResource["dojo.dnd.common"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
	dojo._hasResource["dojo.dnd.common"] = true;
	dojo.provide("dojo.dnd.common");

	dojo.dnd._copyKey = navigator.appVersion.indexOf("Macintosh") < 0 ? "ctrlKey" : "metaKey";

	dojo.dnd.getCopyKeyState = function(e) {
	// summary: abstracts away the difference between selection on Mac and PC,
	// and returns the state of the "copy" key to be pressed.
	// e: Event: mouse event
	return e[dojo.dnd._copyKey]; // Boolean
	};

	dojo.dnd._uniqueId = 0;
	dojo.dnd.getUniqueId = function(){
	// summary: returns a unique string for use with any DOM element
	var id;
	do{
	id = "dojoUnique" + (++dojo.dnd._uniqueId);
	}while(dojo.byId(id));
	return id;
	};

	dojo.dnd._empty = {};

	dojo.dnd.isFormElement = function(/Event/ e){
	// summary: returns true, if user clicked on a form element
	var t = e.target;
	if(t.nodeType == 3 /TEXT_NODE/){
	t = t.parentNode;
	}
	return " button textarea input select option ".indexOf(" " + t.tagName.toLowerCase() + " ") >= 0; // Boolean
	};

	}