function ncn_over(){
    var ncndiv;
    ncndiv = document.getElementById('ncn');
    ncndiv.style.visibility = "visible";

} 
function ncn_out(){
    var ncndiv;
    ncndiv = document.getElementById('ncn');
    ncndiv.style.visibility = "hidden";

} 




function dcsf_over(){
    var dcsfdiv;
    dcsfdiv = document.getElementById('dcfs');
    dcsfdiv.style.visibility = "visible";

} 
function dcsf_out(){
    var dcsfdiv;
    dcsfdiv = document.getElementById('dcfs');
    dcsfdiv.style.visibility = "hidden";

}