function setItem(val){
	var elm = document.getElementById("inp"+val);
	elm.disabled = false;
}
function unsetItem(val){
	var elm = document.getElementById("inp"+val);
	elm.disabled = true;
}

function checkOneBox(e) {
    
    if (window.event)
        e=window.event;
    
    var base=document.getElementById("multi-add");
    
    if (base) {
        els=base.getElementsByTagName("input");
        var b=false;
        for (var i=0;i<els.length;i++) {
           if (els[i].type=="checkbox") {
                el=els[i];
                var el1=getRowInput(el);
                if (el1) {
                    var val=el1.value;
                    if ((val != 0) && (val != '')) {
                        b=true;
                        el.checked=true;
                    }
                }
           } 
        }
        if (!b) {
            alert("Please add at least one item to the cart");
        } else {
            return true;
        }
    }
    
    if (window.event) {
        window.event.returnValue=false;
    } else {
        e.preventDefault();
    }
    
    return false;
}

function getRowInput(x) {

    var tr=x.parentNode.parentNode;
    var els=tr.getElementsByTagName("input");
    
    var el=null;
    
    for (var i=0;i<els.length;i++) {
        if (els[i].type=="text" && els[i].className=="multi-quantity-input") {
            el=els[i];
            break;
        } 
    }

    return el;
}

function changeCell(x) {

    var el=getRowInput(x);
    
    if (el) {
        if (x.checked) {
			el.focus();
			el.value = '1';
		} else {
			el.value = 0;
		}
    }
}