function enableField(){
	document.menuform.menuitem1.disabled = false;
	document.menuform.menuitem2.disabled = false;
	document.menuform.menuitem3.disabled = false;
        document.menuform.menuitem4.disabled = false;
	document.menuform.menuitem5.disabled = false;
	document.menuform.menuitem6.disabled = false;
	document.menuform.presentation[0].disabled = false;
	document.menuform.presentation[1].disabled = false;
}

function setBoxes() {
	if (document.menuform.presentation[0].checked==true) {
		document.menuform.menuitem1.disabled = true;
		document.menuform.menuitem2.disabled = true;
		document.menuform.menuitem3.disabled = true;
		document.menuform.menuitem4.disabled = true;
		document.menuform.menuitem5.disabled = true;
		document.menuform.menuitem6.disabled = true;
	} else if (document.menuform.presentation[1].checked==true) {
		document.menuform.menuitem1.disabled = true;
		document.menuform.menuitem2.disabled = true;
		document.menuform.menuitem3.disabled = true;
		document.menuform.menuitem4.disabled = true;
		document.menuform.menuitem5.disabled = true;
		document.menuform.menuitem6.disabled = true;
	}				
}

function setButtons() {
	if (document.menuform.menuitem1.checked==true) {
		document.menuform.presentation[0].disabled = true;
		document.menuform.presentation[1].disabled = true;
	} else if (document.menuform.menuitem2.checked==true) {
		document.menuform.presentation[0].disabled = true;
		document.menuform.presentation[1].disabled = true;
	} else if (document.menuform.menuitem3.checked==true) {
		document.menuform.presentation[0].disabled = true;
		document.menuform.presentation[1].disabled = true;
	} else if (document.menuform.menuitem4.checked==true) {
		document.menuform.presentation[0].disabled = true;
		document.menuform.presentation[1].disabled = true;
	} else if (document.menuform.menuitem5.checked==true) {
		document.menuform.presentation[0].disabled = true;
		document.menuform.presentation[1].disabled = true;
	} else if (document.menuform.menuitem6.checked==true) {
		document.menuform.presentation[0].disabled = true;
		document.menuform.presentation[1].disabled = true;
	}				
}

function goTopage(dd) {
var ind = dd.selectedIndex;
if (ind == 0) { return; }
var url = dd.options[ind].value
document.location=url;
}