// used by preschool math .htm (mainly for return keys between student names)

function toggleBox(szDivID, iState) // 1 visible, 0 hidden
{
if(document.layers)	   //NN4+
{
document.layers[szDivID].visibility = iState ? "show" : "hide";
document.layers[szDivID].display = iState ? "block" : "none";
}
else if(document.getElementById)	  //gecko(NN6) + IE 5+
{
var obj = document.getElementById(szDivID);
obj.style.visibility = iState ? "visible" : "hidden";
obj.style.display = iState ? "block" : "none";
}
else if(document.all)	// IE 4
{
document.all[szDivID].style.visibility = iState ? "visible" : "hidden";
document.all[szDivID].style.display = iState ? "block" : "none";
}
}
function fNxt(elemName,evt) {
evt = (evt) ? evt : event;
var charCode = (evt.charCode) ? evt.charCode :
((evt.which) ? evt.which : evt.keyCode);
if (charCode==13 || charCode==3) {
document.EFORM.elements[elemName].focus();
return false;
}
return true;
}
function isdefined(v) {
if (typeof(v)!="undefined")
return true;
else
return false;
}
function getd(s1) {
var o;
o=eval("document.EFORM."+s1);
if (!(isdefined(o)))
return "";
return o.value;
}
function check() {
// check that some words were entered!
var S,N,x;
N=0;
for (x=1;x<=50;x++) {
S=getd("EW"+x);
if (S.length>0) {
N++;
}
}
if (N==0) {
document.EFORM.EW1.focus();
alert("No words were entered.");
return false;
}

document.EFORM.submitform.disabled=true;
return true;
}