Object.extend(Principal,{

	Interface:
	{
		marcarLinha:function(classe1,classe2)
		{
			var nodes, node, subNode, i;
			nodes = [];
			nodes[0] = document.body;

			for (var i = 0; i < nodes.length; i++)
			{
				node = nodes[i];

				for (var j = 0; j < node.childNodes.length; j++)
				{
					subNode = node.childNodes[j];

					if (subNode.className == classe1)
					{
						subNode.onmouseover = function()
						{
							this.className = classe2;
						}

						subNode.onmouseout = function()
						{
							this.className = classe1;
						}

						subNode.onmouseup = function()
						{
							//alert("ok");							
						}
					}

					nodes.push(node.childNodes[j]);
				}
			}
		}
	}
});