HTML5 Drag and Drop code is not working in Firefox OS Simulator

[kapilan]

Please help me. I am developing a Java script game. I am using html5 drag and drop code to move objects. i learned it from the following website.
http://www.w3schools.com/html/html5_draganddrop.asp

Game is working fine in Firefox browser (PC). i mean drag and drop method of HTML5 is working fine in Firefox browser(PC). But it is not working(only drag and drop method of HTML5) in Firefox OS Simulator(including internal Firefox browser too).

Please give me a solution.