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css - Change cursor over HTML5 Canvas when dragging the mouse

I have made a paint brush type of application using the Canvas Tag . I wanted that when the mouse is on the canvas the Cursor Changes ,

<canvas id="draw" style="cursor: url(image/pencil.cur)">

I have accomplished this but i cant figure out how shall i change the cursor while I Drag the mouse for drawing the image

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Use the :active CSS pseudo-class to change the cursor when the mouse button is down over the element:

#draw:active { 
    cursor: url(image/pencil.cur);
}

Working example: http://jsfiddle.net/nXv63/


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