function refcat(which){
if (which.name == "selectUno"){
//document.f.selectUno.selectedIndex=-1;
document.f.selectDue.selectedIndex=0;
document.f.selectTre.selectedIndex=0;
document.f.selectQuattro.selectedIndex=0;
}
if (which.name == "selectDue"){
document.f.selectTre.selectedIndex=0;
document.f.selectQuattro.selectedIndex=0;
}
if (which.name == "selectTre"){
document.f.selectQuattro.selectedIndex=0;
}
document.f.submit();
}


function refvit(which)
{
if (which.name == "selectUno")
{
document.f.selectDue.selectedIndex=-1;
}
document.f.submit();
}

function refpro(which){
if (which.name == "selectUno"){
document.f.selectDue.selectedIndex=0;
}
document.f.submit();
}

function goToPage(page){
document.f.page.value = page;
document.f.submit();
}