var xmlHttp = createXmlHttpRequestObject();
function createXmlHttpRequestObject() {
	var xmlHttp;
	if (window.ActiveXObject) {
		try {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {
			xmlHttp = false;
		}
	} else {
		try {
			xmlHttp = new XMLHttpRequest();
		} catch (e) {
			xmlHttp = false;
		}
	}
	if (!xmlHttp) {
		alert("Error creating the XMLHttpRequest object.");
	} else {
		return xmlHttp;
	}
}


var save_order_form = null;
function save2order(frm_object, save_uri) {
	if (frm_object) {save_order_form = frm_object}

	var request_data	= save_order_form[0].name + '=' + save_order_form[0].value;
	var request_uri		= save_uri + "?ajax=" + Math.random();

	if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0) {		
		xmlHttp.open("POST", request_uri, true);
		xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		xmlHttp.onreadystatechange = save2OrderHandle;
		xmlHttp.send(request_data);
	} else { setTimeout('save2order()', 1000); }
}
function save2OrderHandle() {
	if (xmlHttp.readyState == 4) {
		if (xmlHttp.status == 200) {	
			refreshBasket();
		} else { alert("There was a problem accessing the server: " + xmlHttp.statusText); }
	}
}


function refreshBasket() {
	if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0) {		
		xmlHttp.open("POST", '/basket/refresh/?ajax=' + Math.random(), true);
		xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		xmlHttp.onreadystatechange = refreshBasketHandle;
		xmlHttp.send(null);
	} else { setTimeout('refreshBasket()', 1000); }
}
function refreshBasketHandle() {
	if (xmlHttp.readyState == 4) {
		if (xmlHttp.status == 200) {	
			if (document.getElementById && document.getElementById('basket')) {
				document.getElementById('basket').innerHTML = xmlHttp.responseText;
			}
		} else { alert("There was a problem accessing the server: " + xmlHttp.statusText); }
	}
}


function initNavi() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("nav");
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() {
					this.className+=" over";
				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
				}
			}
		}
	}
}


function updateLinks() {
	if (document.getElementsByTagName) {
		links_list = document.getElementsByTagName('a');
		for(i=0; i<links_list.length; i++) {
			if (0 == links_list[i].rel.indexOf('ext:')) {
				links_list[i].target = links_list[i].rel.substring(4, links_list[i].rel.length);
			}
		}
	}
}

function checkOrderItems() {
	if (document.getElementsByTagName) {
		select_list = document.getElementsByTagName('select');
		for(i=0; i<select_list.length; i++) {
			if ('0' != select_list[i].options[select_list[i].selectedIndex].value) {
				return true;
			}
		}
		alert('Выберите товары для заказа!');
		return false;
	} else {
		return true;
	}
}

function computeFee(cnt_el, price_el, sum_el, partner_price) {
	if (!document.getElementById) return false;

	cnt_el		= document.getElementById(cnt_el);
	price_el	= document.getElementById(price_el);
	sum_el		= document.getElementById(sum_el);

	if (!cnt_el || !price_el || !sum_el) return false;

	cnt_value	= (isNaN(cnt_el.value) || ('' == cnt_el.value)) ? 0 : cnt_el.value;
	price_value	= (isNaN(price_el.value) || ('' == price_el.value)) ? 0 : price_el.value;

	sum_el.innerHTML = sprintf("%01.2f", cnt_value * (price_value - partner_price));
}


function computeSum(cnt_element, price, sum_element_id) {
	if (document.getElementById) {
		if (isNaN(cnt_element.value) || isNaN(price)) {
			document.getElementById(sum_element_id).innerHTML = '0.00';
		} else {
			document.getElementById(sum_element_id).innerHTML = sprintf("%01.2f", cnt_element.value * price);
		}
	}
}


function sprintf( ) {    // Return a formatted string
    // 
    // +   original by: Ash Searle (http://hexmen.com/blog/)
    // + namespaced by: Michael White (http://crestidg.com)
 
    var regex = /%%|%(\d+\$)?([-+#0 ]*)(\*\d+\$|\*|\d+)?(\.(\*\d+\$|\*|\d+))?([scboxXuidfegEG])/g;
    var a = arguments, i = 0, format = a[i++];
 
    // pad()
    var pad = function(str, len, chr, leftJustify) {
        var padding = (str.length >= len) ? '' : Array(1 + len - str.length >>> 0).join(chr);
        return leftJustify ? str + padding : padding + str;
    };
 
    // justify()
    var justify = function(value, prefix, leftJustify, minWidth, zeroPad) {
        var diff = minWidth - value.length;
        if (diff > 0) {
            if (leftJustify || !zeroPad) {
            value = pad(value, minWidth, ' ', leftJustify);
            } else {
            value = value.slice(0, prefix.length) + pad('', diff, '0', true) + value.slice(prefix.length);
            }
        }
        return value;
    };
 
    // formatBaseX()
    var formatBaseX = function(value, base, prefix, leftJustify, minWidth, precision, zeroPad) {
        // Note: casts negative numbers to positive ones
        var number = value >>> 0;
        prefix = prefix && number && {'2': '0b', '8': '0', '16': '0x'}[base] || '';
        value = prefix + pad(number.toString(base), precision || 0, '0', false);
        return justify(value, prefix, leftJustify, minWidth, zeroPad);
    };
 
    // formatString()
    var formatString = function(value, leftJustify, minWidth, precision, zeroPad) {
        if (precision != null) {
            value = value.slice(0, precision);
        }
        return justify(value, '', leftJustify, minWidth, zeroPad);
    };
 
    // finalFormat()
    var doFormat = function(substring, valueIndex, flags, minWidth, _, precision, type) {
        if (substring == '%%') return '%';
 
        // parse flags
        var leftJustify = false, positivePrefix = '', zeroPad = false, prefixBaseX = false;
        for (var j = 0; flags && j < flags.length; j++) switch (flags.charAt(j)) {
            case ' ': positivePrefix = ' '; break;
            case '+': positivePrefix = '+'; break;
            case '-': leftJustify = true; break;
            case '0': zeroPad = true; break;
            case '#': prefixBaseX = true; break;
        }
 
        // parameters may be null, undefined, empty-string or real valued
        // we want to ignore null, undefined and empty-string values
        if (!minWidth) {
            minWidth = 0;
        } else if (minWidth == '*') {
            minWidth = +a[i++];
        } else if (minWidth.charAt(0) == '*') {
            minWidth = +a[minWidth.slice(1, -1)];
        } else {
            minWidth = +minWidth;
        }
 
        // Note: undocumented perl feature:
        if (minWidth < 0) {
            minWidth = -minWidth;
            leftJustify = true;
        }
 
        if (!isFinite(minWidth)) {
            throw new Error('sprintf: (minimum-)width must be finite');
        }
 
        if (!precision) {
            precision = 'fFeE'.indexOf(type) > -1 ? 6 : (type == 'd') ? 0 : void(0);
        } else if (precision == '*') {
            precision = +a[i++];
        } else if (precision.charAt(0) == '*') {
            precision = +a[precision.slice(1, -1)];
        } else {
            precision = +precision;
        }
 
        // grab value using valueIndex if required?
        var value = valueIndex ? a[valueIndex.slice(0, -1)] : a[i++];
 
        switch (type) {
            case 's': return formatString(String(value), leftJustify, minWidth, precision, zeroPad);
            case 'c': return formatString(String.fromCharCode(+value), leftJustify, minWidth, precision, zeroPad);
            case 'b': return formatBaseX(value, 2, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
            case 'o': return formatBaseX(value, 8, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
            case 'x': return formatBaseX(value, 16, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
            case 'X': return formatBaseX(value, 16, prefixBaseX, leftJustify, minWidth, precision, zeroPad).toUpperCase();
            case 'u': return formatBaseX(value, 10, prefixBaseX, leftJustify, minWidth, precision, zeroPad);
            case 'i':
            case 'd': {
                        var number = parseInt(+value);
                        var prefix = number < 0 ? '-' : positivePrefix;
                        value = prefix + pad(String(Math.abs(number)), precision, '0', false);
                        return justify(value, prefix, leftJustify, minWidth, zeroPad);
                    }
            case 'e':
            case 'E':
            case 'f':
            case 'F':
            case 'g':
            case 'G':
                        {
                        var number = +value;
                        var prefix = number < 0 ? '-' : positivePrefix;
                        var method = ['toExponential', 'toFixed', 'toPrecision']['efg'.indexOf(type.toLowerCase())];
                        var textTransform = ['toString', 'toUpperCase']['eEfFgG'.indexOf(type) % 2];
                        value = prefix + Math.abs(number)[method](precision);
                        return justify(value, prefix, leftJustify, minWidth, zeroPad)[textTransform]();
                    }
            default: return substring;
        }
    };
 
    return format.replace(regex, doFormat);
}