function email()
{
	
	 	var indice = document.select.select_correo.selectedIndex
	    var valor = document.select.select_correo.options[indice].value
	    var url = document.select.select_correo.options[indice].text
	    
	switch(url)
	{
	case 'guadalajara@sendas.com.mx':
		document.location.href='mailto:guadalajara@sendas.com.mx';
		break;
	case 'mexico@sendas.com.mx':
		document.location.href='mailto:mexico@sendas.com.mx';
	break;
	case 'monterrey@sendas.com.mx':
		document.location.href='mailto:monterrey@sendas.com.mx';
	break;
	
	}
}