rem: x >= this.offset[0] && 
add: x >= this.offset[0] && 
context:   within: function(element, x, y) {    if (this.includeScrollOffsets)      return this.withinIncludingScrolloffsets(element, x, y);    this.xcomp = x;    this.ycomp = y;    this.offset = this.cumulativeOffset(element);    return (y >= this.offset[1] &&            y <  this.offset[1] + element.offsetHeight &&            x >= this.offset[0] &&             x <  this.offset[0] + element.offsetWidth);  },
meta: 5663	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5663/d29159eae8749c508d01bb447868321a3ba6bbfa/prototype.js/buggy/manager/media/script/scriptaculous/prototype.js