Which One will you Pick? (Positioning Div with JS)

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div id='pickme' SAYS: Pick Me! Pick Me!
JS on each img is : onmouseover="showpickme(this);" onmouseout="hidepickme();"
#pickme has visibility: hidden / visible;
JS fn showpickme does :
pickmeDiv.style.left = x + 50;
pickmeDiv.style.top = y + 30;
pickmeDiv.style.visibility = 'visible';