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function getAllChildren(node){	var returnArr = [];	if (node == undefined)	{		node = document.body;	}	else if (typeof(node) != "object")	{		return ([]);	}	var children = (node.children) ? node.children : node.childNodes;	for (var i = 0; i < children.length; i++)	{		returnArr = returnArr.concat(getAllChildren(children[i]));	}	return (returnArr);}