var peticion = false; 
if (window.XMLHttpRequest) {
      peticion = new XMLHttpRequest();
      } else if (window.ActiveXObject) {
            peticion = new ActiveXObject("Microsoft.XMLHTTP");
}

function ObtenerDatos(datos,divID) { 
	if(peticion) {
		 var obj = document.getElementById(divID); 
		 peticion.open("GET", datos); 
		 peticion.onreadystatechange = function()  { 
			  if (peticion.readyState == 4) { 
				   obj.innerHTML = peticion.responseText; 
			  } 
		 } 
	peticion.send(null); 
	}
}

function openWindow(url,name,feature){
	var win=window.open(url,name,feature);
}


// <![CDATA[
function display(obj,n) {
txt = obj.options[obj.selectedIndex].value;

for (i=1;i<=n;i++)
{
	document.getElementById('div'+i).style.display = 'none';
}
	document.getElementById(txt).style.display = 'block';

}
// ]]>