[Iv]

var max_value:Number = Number.MIN_VALUE;
var len:Number = _root.xml_file.firstChild.childNodes.length;
var node:XMLNode = _root.xml_file.firstChild.firstChild;
while (node) {
if (Number(node.attributes.s)>max_value) {
max_value = Number(node.attributes.s);
}
node = node.nextSibling;
}