function mouseOvercrv()
{document.crv.src ="images/crv_logo_hover.gif"}
function mouseOutcrv()
{document.crv.src ="images/crv_logo.gif"}

function mouseOvercontactar()
{document.contactar.src ="images/contactar_hover.gif"}
function mouseOutcontactar()
{document.contactar.src ="images/contactar.gif"}

function mouseOvercv()
{document.cv.src ="images/cv_hover.gif"}
function mouseOutcv()
{document.cv.src ="images/cv.gif"}