function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function rotadorItems(show,hide1,hide2,hide3) {
toShow = document.getElementById(show);
toHide1 = document.getElementById(hide1);
toHide2 = document.getElementById(hide2);
toHide3 = document.getElementById(hide3);

toShow.style.display = "block";
toHide1.style.display = "none";
toHide2.style.display = "none";
toHide3.style.display = "none";
}