function getPositionY (element) 
{ 
	var positionY = 0; 
	while (element != null) 
	{ 
		positionY += element.offsetTop; 
		element = element.offsetParent; 
	} 
	return positionY; 
} 

function getPositionX (element) 
{ 
	var positionX = 0; 
	while (element != null) 
	{ 
		positionX += element.offsetLeft; 
		element = element.offsetParent; 
	} 
	return positionX; 
} 

function anadirCorreo()
{
	var h_apriv = 13;
	for (var icapap in document.getElementById('contenedor').getElementsByTagName("div"))
	{				
		if (document.getElementById('contenedor').getElementsByTagName("div")[icapap].className == 'header_registrado')
		{
			h_apriv += document.getElementById('contenedor').getElementsByTagName("div")[icapap].offsetHeight;
			break;
		}
	}
	
	for (var icapa in document.getElementById('contenedor').getElementsByTagName("div"))
	{				
		if (document.getElementById('contenedor').getElementsByTagName("div")[icapa].className == 'header_contenido1')
		{
			//insertBefore
			var nueva_capa="";

			var posx = getPositionX(document.getElementById('contenedor'))+600;
			
			nueva_capa+='<div id="capa_correo" style="position:absolute;z-index:999;width:100px;top:'+h_apriv+'px;left:0px;margin-left:'+posx+'px">';
			nueva_capa+='	<div style="background: url(/on/images/ico_sobre_peq.jpg) no-repeat; padding: 0px 4px 0px 26px; font-size:1.2em;">';
			nueva_capa+='		<a href="https://correo1.movistar.es/panel.htm" target="_blank" style="color:#5CD2ED"> Correo</a>';
			nueva_capa+='		<span>&nbsp&nbsp;<img src="/on/img/fndLstLanguages.gif">&nbsp;&nbsp;</span>';
			nueva_capa+='	</div>';
			nueva_capa+='</div>';
			document.getElementById('contenedor').getElementsByTagName("div")[icapa].innerHTML=nueva_capa+document.getElementById('contenedor').getElementsByTagName("div")[icapa].innerHTML;

			return;
		}
	}

}

anadirCorreo();