function valButton(btn) {
    var cnt = -1;
    for (var i=btn.length-1; i > -1; i--) {
        if (btn[i].checked) {cnt = i; i = -1; }

    }
    if (cnt > -1) return btn[cnt].value;
    else return null;
}

function valform(myform) {
var btn = valButton(myform.group1);
if (btn == null){
 alert('Please make a selection to confirm your bid.');
 return false;
}
else{
  var a = btn.split(',');
  var el = document.createElement("input");
  el.type = "hidden";
  el.name = "action";
  el.value = a[0];
  myform.appendChild(el); 
  el = document.createElement("input");
  el.type = "hidden";
  el.name = "BidID";
  el.value = a[1];
  myform.appendChild(el); 
  myform.submit(); 
}
}

function checkCheckBox(f) {
  if (f.action.checked == false) {
    alert('Please check the box indicating your agreement.');
    return false;
  } else
    return true;
}

function valCategory(myform) {

if (myform.ProductCategory.length == undefined){
  if (myform.ProductCategory.checked){
    myform.submit(); 
  }else{
   alert('Please select a category.');
   return false;
  }
}else {
  var btn = valButton(myform.ProductCategory);
  if (btn == null){
   alert('Please select a category.');
   return false;
  }
  else{
    myform.submit(); 
  }
}
}

function toggle(list){ 
var listElementStyle=document.getElementById(list).style; 
if (listElementStyle.display=="none"){ 
listElementStyle.display="block"; 
 }
else{ listElementStyle.display="none"; 
 } 
}

function valMyAccount(myform) {
var btn = valButton(myform.action);
if (btn == null){
 alert('Please select an option.');
 return false;
}
else{
  myform.submit(); 
}
}

function checkAll(checkname, exby) {
  for (i = 0; i < checkname.length; i++)
  checkname[i].checked = exby.checked? true:false
}