Getting DIV id based on x & y position

Question

The problem I\'m trying to solve is \"What\'s at this position?\"

It\'s fairly trivial to get the x/y position (offset) of a DIV, but what about the reverse? How do

Answer 1

function getDivByXY(x,y) {
   var alldivs = document.getElementsByTagName('div');

   for(var d = 0; d < alldivs.length; d++) {
      if((alldivs[d].offsetLeft == x) && (alldivs[d].offsetTop == y)) {
         return alldivs[d];
      }
   }

   return false;
}