function Navega(codigo,url) {
	  parent.bottomFrame.img01.src='images/seta_off.gif';
		parent.bottomFrame.img02.src='images/seta_off.gif';
		parent.bottomFrame.img03.src='images/seta_off.gif';
		parent.bottomFrame.img04.src='images/seta_off.gif';
		parent.bottomFrame.img05.src='images/seta_off.gif';
		parent.bottomFrame.img06.src='images/seta_off.gif';
		parent.bottomFrame.img07.src='images/seta_off.gif';
	  obj=eval('parent.bottomFrame.img'+codigo);
		obj.src='images/seta_bot.gif';
		parent.mainFrame.navigate(url);
	}