
<!-- FINESTRES -->
function newWindow(url,width,height) {
  var estilo='resizable=0,menubar=0,toolbar=0,location=0,personalbar=0,status=0,scrollbars=yes,top='+(screen.availHeight-height)/2+',left='+(screen.availWidth-width)/2;
   window.open(url,"nombre"+width+height,'width='+width+',height='+height+','+estilo);
}

function extender(obj,obj2) {
		var objeto = document.getElementById(obj);
		var objeto2 = document.getElementById(obj2);
		objeto.style.visibility = 'visible';
		objeto2.style.visibility = 'visible';
	}

function contraer(obj,obj2) {
		var objeto = document.getElementById(obj);
		var objeto2 = document.getElementById(obj2);
		objeto.style.visibility = 'hidden';
		objeto2.style.visibility = 'hidden';

	}