var missingOptionName = null;

function doOptionCheck(form){

    var qty = 0;
    var version = 3;

    // test products
    for(k=0;k<form.elements.length;k++){

        var fldType = form.elements[k].type;
        var fldName = form.elements[k].name;
        var flds = new Array();
        var pid = null;
        var pName = null;
        var fldValue = null;

        // 2.12 html form code
        if(fldName.substring(0,5) == "item-"){
            flds = fldName.split('|');
            pName = flds[2];
            pid = flds[0].substring(5,flds[0].length);
        }
        // 3.0 html form code
        else if(fldName.match(/item\.(\w+)\.quantity/ig)){
            var test = fldName.match(/item\.(\w+)\.quantity/ig);
            pid = RegExp.$1;
            nameFld = 'item.' + pid + '.name';
            if(form.elements[nameFld]){
                pName = form.elements[nameFld].value;
            }
        }

        if(pid){
            if(fldType == "text"){
                fldValue = form.elements[k].value;
            }
            if(fldType == "select-one"){
                var qtyIndex = form.elements[k].selectedIndex;
                fldValue = form.elements[k].options[qtyIndex].value;
            }
            if(fldValue != "" && parseInt(fldValue) > 0){
                qty += parseInt(fldValue);
                if(!checkOption(form,pid)){
                    if(missingOptionName){
                        alert("You forgot to select the " + missingOptionName + " option for the " + pName);
                    }
                    else{
                        alert("You forgot to select a required option for the " + pName);
                    }
                    return false;
                }
            }
        }
    }
    if(qty == 0){
        alert("You have not entered a valid quantity for a product?");
        return false;
    }

return true;
}
// -------------------------------------------------------------------
function checkOption(form,pid){

    // go through and get the value of the options in form

    for(i=0;i<form.elements.length;i++){

        var optionFld = form.elements[i];
        var optionFldType = optionFld.type;

        var optionName = optionFld.name;
        var optionValue = null;

        // 212 options
        var pattern2 = new RegExp("OPTION\\|(\\w+)\\|" + pid,'i');
        // 30 options
        var pattern3 = new RegExp("option\\." + pid + "\\.(.*)",'i');

        if(optionName.match(pattern2) || optionName.match(pattern3)){
            //alert(optionName);
            if(optionFldType == "select-one"){
                var optionIndex = form.elements[i].selectedIndex;
                optionValue = form.elements[i].options[optionIndex].value;
                if(optionValue.substring(0,7).toLowerCase() == "invalid"){

                    if(RegExp.$1){
                        missingOptionName = RegExp.$1;
                    }
                    // 2.12 option names
                    if(optionValue.match(/(.*)\|(.*)/i)){
                        if(RegExp.$2){
                            missingOptionName = RegExp.$2;
                        }
                    }
                    return false;
                }
            }
            if(optionFldType == "radio"){
                var isChecked = false;
                for(j=0;j<form.elements[optionName].length;j++){
                    if(form.elements[optionName][j].checked){
                        isChecked = true;
                        break;
                    }
                }
                if(!isChecked){
                    if(RegExp.$1){
                        missingOptionName = RegExp.$1;
                    }
                    // 212 radio option with numeric option numbers
                    if(optionName.match(/(.*)\|(\d+)\|(.*)/i)){
                        missingOptionName = null;
                    }
                    return false;
                }
            }
        }
    }

return true;
}