$.extend({
	round : function(n, digit) {
		if (isNaN(n) || isNaN(digit))
			return 0;
		return Math.round(n * Math.pow(10, digit)) / Math.pow(10, digit);
	},
	toFloat : function(str) {
		var r = parseFloat(str.replace(/,/g, ''));
		if (isNaN(r))
			return 0;
		return r;
	},
	formatCurrency : function(d, digit) {
		var s = this.round(d, digit).toString();
		var hasSymbol = s.charAt(0) == '-' || s.charAt(0) == '+';
		var integerStr = hasSymbol ? s.substr(1) : s;
		var digitPos = integerStr.indexOf(".");
		var result = "";
		var digitStr = "";
		if (digitPos != -1) {
			integerStr = s.substr(hasSymbol ? 1 : 0, digitPos);
			digitStr = s.substr(digitPos + 1 + (hasSymbol ? 1 : 0));
		}
		for (var i = integerStr.length; i >= 0; i = i - 3) {
			result = integerStr
					.substr(i - 3 < 0 ? 0 : i - 3, i - 3 < 0 ? i : 3)
					+ result;
			if (i - 3 > 0)
				result = "," + result;
		}
		if (digit > 0) {
			result += "." + digitStr;
			for (var i = digitStr.length; i < digit; i++) {
				result += '0';
			}
		}
		if (hasSymbol)
			result = s.charAt(0) + result;
		return result;
	},
	opennewwin : function(url, name, height, width, options) {
		if (height < 1) {
			height = Math.round(screen.availHeight * height);
		}
		if (width < 1) {
			width = Math.round(screen.availWidth * width);
		}
		var top = (screen.availHeight - height) / 2;
		var left = (screen.availWidth - width) / 2;
		if (!$.browser.msie) {
			var features = "resizable=1,status=1,scrollbars=1,height=" + height
					+ ",width=" + width + ",top=" + top + ",left=" + left;
			for (key in options) {
				features += "," + key + "=" + options[key];
			}
			return window.open(url, name, features);
		} else {
			var features = "resizable:1;status:1;scroll:1;center:1;dialogHeight:"
					+ height
					+ "px;dialogWidth:"
					+ width
					+ "px;dialogTop:"
					+ top + "px;dialogLeft:" + left + "px";
			if (options && options.modal) {
				return window.showModalDialog(url, window, features);
			}
			return window.showModelessDialog(url, window, features);
		}
	},
	getFormParams : function(form) {
		var r = {};
		$(":text, :hidden, :password, select", form).each(function() {
			if (typeof(this.name) != "undefined" && this.name.length > 0
					&& $(this).visible()) {
				r[this.name] = this.value;
			}
		});
		$(":radio:checked, :checkbox:checked", form).each(function() {
					r[this.name] = true;
				});
		return r;
	},
	querystring : function(qs) {
		var params = {};
		if (qs == null)
			qs = location.search.substring(1, location.search.length);
		if (qs.length > 0) {
			qs = qs.replace(/\+/g, ' ');
			var args = qs.split('&'); // parse out name/value pairs separated
										// via &

			for (var i = 0; i < args.length; i++) {
				var pair = args[i].split('=');
				var name = decodeURIComponent(pair[0]);

				var value = (pair.length == 2)
						? decodeURIComponent(pair[1])
						: name;
				params[name] = value;
			}
		}
		var parray = {
			get : function(name) {
				return params[name];
			},
			set : function(name, v) {
				if (typeof(v) == 'undefined' || v.length == 0)
					params[v] = null;
				else
					params[name] = v;
				return this;
			},
			toString : function() {
				var u = "";
				for (var name in params) {
					if (params[name] != null)
						u += name + "=" + encodeURIComponent(params[name])
								+ "&";
				}
				return u.substring(0, u.length - 1);
			}
		}
		return parray;
	},
	getCookie : function(sName) {
		// cookies are separated by semicolons
		var aCookie = document.cookie.split("; ");
		for (var i = 0; i < aCookie.length; i++) {
			// a name/value pair (a crumb) is separated by an equal sign
			var aCrumb = aCookie[i].split("=");
			if (sName == aCrumb[0])
				return unescape(aCrumb[1]);
		}
		return null;
	},
	setCookie : function(sName, sValue, date) {
		document.cookie = sName + "=" + escape(sValue) + "; expires="
				+ date.toGMTString();
	},
	loadXML : function(xmlFile, async) {
		var xmlDoc;
		if (window.ActiveXObject) {// for ie
			xmlDoc = new ActiveXObject('Microsoft.XMLDOM');
		} else if (document.implementation
				&& document.implementation.createDocument) {// for moz
			xmlDoc = document.implementation.createDocument('', '', null);
		} else {
			alert('xml read ERROR!');
			return null;
		}
		xmlDoc.async = async;
		xmlDoc.preserveWhiteSpace = false;
		xmlDoc.load(xmlFile);
		return xmlDoc;
	}
});
$.fn.extend({
	blockUI : function(opts) {
		var topDoc = window.document;
		var tw = topDoc.documentElement.clientWidth;
		var th = topDoc.documentElement.clientHeight;
		var el = $(this);
		var st = document.documentElement.scrollTop;
		var sl = document.documentElement.scrollLeft;
		var ww = document.documentElement.scrollWidth;
		var wh = document.documentElement.scrollHeight;
		if (ww < tw)
			ww = tw;
		if (wh < th)
			wh = th;
		var lay = $("#hcks_overlay");
		if (lay.length == 0) {
			var overlay = topDoc.createElement('DIV');
			overlay.id = 'hcks_overlay';
			overlay.style.position = 'absolute';
			overlay.style.left = '0px';
			overlay.style.top = '0px';
			overlay.style.width = (ww + sl) + 'px';
			overlay.style.height = (wh + st) + 'px';
			overlay.style.zIndex = 100;
			overlay.style.backgroundColor = '#000';
			overlay.className = 'overlay';
			// fix ie 6-- bug
			if ($.browser.msie && $.browser.version < 7) {
				var overlayFrame = topDoc.createElement("IFRAME");
				overlayFrame.id = 'hcks_overlayFrame';
				overlayFrame.style.position = 'absolute';
				overlayFrame.style.left = '0px';
				overlayFrame.style.top = '0px';
				overlayFrame.style.width = (ww + sl) + 'px';
				overlayFrame.style.height = (wh + st) + 'px';
				overlayFrame.style.zIndex = 99;
				overlayFrame.allowTransparency = true;
				overlayFrame.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)';
				topDoc.body.appendChild(overlayFrame);
			}
			topDoc.body.appendChild(overlay);
		} else {
			if (lay.is(":hidden")) {
				$("#hcks_overlayFrame").css({
							width : (ww + sl),
							height : (wh + st)
						}).show();
				lay.css({
							width : (ww + sl),
							height : (wh + st)
						}).show();
			}
		}
		var t = (th - el.height()) / 2 + st;
		var l = (tw - el.width()) / 2 + sl;
		if (t < 0)
			t = 10;
		if (l < 0)
			l = 10;
		el.revertValidation();
		el.css("position", "absolute").css('zIndex', 101).css("left", l + "px")
				.css("top", t + "px").show();
		return el;
	},
	unblockUI : function() {
		var overlay = $("#hcks_overlay");
		overlay.hide();
		$("#hcks_overlayFrame").hide();
		$(this).hide();
	},
	visible : function() {
		var v = ((this.attr("tagName") == 'INPUT' && this.attr("type") == 'hidden') || $(this)
				.is(":visible"))
				&& $(this).parents(":hidden").length == 0;
		return v;
	}
});
Number.prototype.add = function(arg) {
	var r1, r2, m;
	try {
		r1 = this.toString().split(".")[1].length
	} catch (e) {
		r1 = 0
	}
	try {
		r2 = arg.toString().split(".")[1].length
	} catch (e) {
		r2 = 0
	}
	m = Math.pow(10, Math.max(r1, r2));
	return (this * m + arg * m) / m;
}
Number.prototype.sub = function(arg) {
	return this.add(-arg);
}
Number.prototype.mul = function(arg) {
	var m = 0, s1 = this.toString(), s2 = arg.toString();
	try {
		m += s1.split(".")[1].length
	} catch (e) {
	}
	try {
		m += s2.split(".")[1].length
	} catch (e) {
	}
	return Number(s1.replace(".", "")) * Number(s2.replace(".", ""))
			/ Math.pow(10, m);
}
Number.prototype.div = function(arg) {
	var t1 = 0, t2 = 0, r1, r2;
	try {
		t1 = this.toString().split(".")[1].length
	} catch (e) {
	}
	try {
		t2 = arg.toString().split(".")[1].length
	} catch (e) {
	}
	with (Math) {
		r1 = Number(this.toString().replace(".", ""))
		r2 = Number(arg.toString().replace(".", ""))
		return (r1 / r2) * pow(10, t2 - t1);
	}
}
Number.prototype.round = function(arg) {
	return $.round(this, arg);
}
Date.prototype.format = function(fm) {
	if (!fm)
		fm = "yyyy-MM-dd";
	return fm.replace(/yyyy/g, this.getFullYear().toString()).replace(
			/MM/g,
			this.getMonth() < 9 ? "0" + (this.getMonth() + 1) : this.getMonth()
					.toString()).replace(
			/dd/g,
			this.getDate() < 10 ? "0" + this.getDate() : this.getDate()
					.toString()).replace(/yy/g,
			this.getFullYear().toString().substr(2)).replace(/M/g,
			this.getMonth() + 1).replace(/d/g, this.getDate().toString());
}

/**
 * 判断是否出现纵向滚动条
 * @return {}
 */
function getIsScroll() {
	var xScroll, yScroll;
	if (window.innerHeight && window.scrollMaxY) {
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight) { // all
																			// but
																			// Explorer
																			// Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla
				// and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}

	var windowWidth, windowHeight;
	if (self.innerHeight) { // all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement
			&& document.documentElement.clientHeight) { // Explorer 6 Strict
														// Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}

	// for small pages with total height less then height of the viewport
	if (yScroll < windowHeight) {
		pageHeight = windowHeight;
	} else {
		pageHeight = yScroll;
	}

	if (xScroll < windowWidth) {
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}

//	alert(pageWidth);
//  	alert(pageHeight);
//   	alert(windowWidth);
//    alert(windowHeight);
	return pageHeight - windowHeight > 0;
}