function capacity(){
    var result = document.getElementById("capacity").value / 6;
    document.getElementById("capacity_x").value = Math.ceil(result);
}

function add_sum(goods_count, min_order, mid, max_order){
    var select_total = 0;
    var select_total_ex = 0;
    var array = [];
    var j;
    var m;
    if( min_order ){
        if((mid.value > 0) && (mid.value < min_order)){
            var str = "MEMBERS MIN ORDER " + min_order;
            alert(str);
            mid.value = '';
            return;
        }
        if(mid.value > max_order){
            var str = "MEMBERS MAX ORDER" + max_order;
            alert(str);
            mid.value = '';
            return;
        }
    }
}

function numeralsOnly(evt,goods_count) {
    evt = (evt) ? evt : event;
    var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : 
        ((evt.which) ? evt.which : 0));
    if(charCode == 46 || (charCode > 36 && charCode < 41)){
     return true;
    }else if (charCode > 31 && (charCode < 48 || charCode > 57) && (charCode < 96 || charCode > 105)) {
        return false;
    }
     return true;
}

function submit_001(count_n){
    var purchase = 0;
    for( i = 0; i < count_n; i++ ){
        var j = i + 1;
        var str = 'purchase_count' + j;
        var nn  = parseInt(document.getElementById(str).value, 10);
        if ( 0 < nn ){
            purchase = purchase + nn;
        }
    }
    if( 0 < purchase ){
        document.main_form.submit();
    }else{
        alert('!! NO SELECTED !!');
    }
}