// Variáveis
s = new SwissKnife();
//Função que arredonda os cantos
function arredondar(){
	if(!!document.getElementById('esq')){
		span = document.createElement('span');
		span.className = 'arr_esq';
		document.getElementById('esq').appendChild(span);
		span2 = document.createElement('span');
		span2.className = 'arr_dir';
		document.getElementById('conteudo').appendChild(span2);
	} else{
		span = document.createElement('span');
		span.className = 'arr_esq';
		document.getElementById('conteudo').appendChild(span);
		span2 = document.createElement('span');
		span2.className = 'arr_dir';
		document.getElementById('conteudo').appendChild(span2);
	}
}
//Chamando ao iniciar o site
s.addListener(window, 'load', arredondar);