function parseFoodListXML(xml) {
	var FoodListNode = xml.getElementsByTagName("FoodList");
	var FoodNodes = FoodListNode[0].getElementsByTagName("Food");
	
	var arr = new Array();
	for(var i = 0; i < FoodNodes.length; i++) {
    		var FoodNode = FoodNodes[i];
    		var food = new Array();
     		var elems=FoodNode.getElementsByTagName("Elem");
      		for (var j=0;j<elems.length;j++){
      			elem=elems[j];
      			food.push({"name":elem.getAttribute("name"),"unit":elem.getAttribute("unit"),"heat":elem.getAttribute("heat")});
      		}
    		arr.push(food);
  }
  return arr;
}