var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
var isIE=navigator.userAgent.indexOf("IE")>0;
var isIE5=navigator.userAgent.indexOf("IE 5.0")>0;
var isIE6=navigator.userAgent.indexOf("IE 6.0")>0;
var isNav=(navigator.appName.indexOf("Netscape")!=-1);
var element;
function $(obj){
	return typeof(obj) == "string" ? document.getElementById(obj) : obj;
}
String.prototype.trim=function(){
	return this.replace(/(^[\s]*)|([\s]*$)/g, "");
};
/********************

      UTILITIES
      
********************/


/*#数组添加成员#*/
Array.prototype.add=function(key){
	this[this.length]=key;
};

/*#字符串是否为空 true 为空#*/
function isNone(str){
	return str==null||str.trim()=="" ? true:false;
};

/*#将焦点指定到对应的obj上#*/
function efocu(obj){
	try{$(obj).focus();}catch(e){}
};

/*#插入HTML代码#*/
function insHtm(obj,code,pos){
	obj=$(obj);
	if(isIE){
		obj.parentNode.insertAdjacentHTML(pos==null?"beforeend":"afterbegin",code);
	}
	else{
		var r=obj.ownerDocument.createRange();
		r.setStartBefore(obj);
		eval("obj.parentNode."+(pos==null?"appendChild":"insertBefore")+"(r.createContextualFragment(code),obj.parentNode.firstChild)");
	}
}


/*#查看k1是否在当前字符串中,k2为分割符默认为逗号#*/
String.prototype.inc=function(k1,k2){
	if(k2==null){k2=","};
	return (k2+this+k2).indexOf(k2+k1+k2) > -1 ? true:false;
};

/*#从字符串中截取k1字符串#*/
String.prototype.sub=function(k1,k2){
	if(k2==null){k2=","};
	var tmp = k2 + this + k2;
	var size = tmp.indexOf(k1);
	if(size ==-1){
		return 0;
	}
	var i = 0;
	while(tmp.charAt(size+3+i) != '/'){
		i++;
	}
	return tmp.substring(size+3,size+3+i);
};

function hide(el) {
	element = $(el);
	element.style.display = 'none';
}
function show(el) {
	element = $(el);
	element.style.display = '';
}
function remove(el){
	element = $(el);
	element.parentNode.removeChild(element);
}
function toggle(el) {
    el = $(el);
	if(el.style.display=="none"){
		el.style.display='block';
	}else{
		el.style.display='none';
	}
}
function menuToggle(element, eventName, handler){
	  element = $(element);
	  if (element.addEventListener) {
        element.addEventListener(eventName, handler, false);
      } else {
        element.attachEvent("on" + eventName, handler);
      }
}
/*==================================================*/

///////////////
function addListener(element, type, expression, bubbling)
{
  bubbling = bubbling || false;
  if(window.addEventListener)	{ // Standard
    element.addEventListener(type, expression, bubbling);
    return true;
  } else if(window.attachEvent) { // IE
    element.attachEvent('on' + type, expression);
    return true;
  } else return false;
}

var ImageLoader = function(url){
  this.url = url;
  this.image = null;
  this.loadEvent = null;
};

ImageLoader.prototype = {
  load:function(){
    this.image = document.createElement('img');
    var url = this.url;
    var image = this.image;
    var loadEvent = this.loadEvent;
    addListener(this.image, 'load', function(e){
      if(loadEvent != null){
        loadEvent(url, image);
      }
    }, false);
    this.image.src = this.url;
  },
  getImage:function(){
    return this.image;
  }
};

function loadImage(objId,urls){
var loader = new ImageLoader(urls);
loader.loadEvent = function(url){
 obj = document.getElementById(objId);
 obj.src = url;
}
loader.load();
}

function rewrite_url(pname , pid){
	if(pid == null || pid == "undefined" ) {return ""};
	var re = /[^a-zA-Z0-9]/ig;
	var url = "";
	if(FRIENDLY_URLS != null && FRIENDLY_URLS == 'true'){
		url = linkURL + pid;
	}
	else{
		url = linkURL + pid;
	}
	return url;
}
/////////////////
/*the li scroll*/
function page_go(id,num, c,t,cid){
	var Prev = id + "Prev";
	var Next = id + "Next";	
	var pageId = id + "Page";
	var Page = 0;
	var currentPage = 1;
	var PageNumber = Math.ceil(t/num);
	var activeClick = true;
	var gopage = 0;
	if(num>t){activeClick = false;}
	if(c >= num){
		if(t!=null){
			gopage = Math.ceil(c/num);
			if(c % num == 0) gopage++; 		
		}
		updateProduct('goto', gopage);
	}

	function updateProduct(type, gopage) {
		if(type=='pre') {Page -= parseInt(num);currentPage--;}
		if(type=='next') {Page += parseInt(num);currentPage++;}
		if(type=='goto' && gopage != null) {Page = (gopage-1) * num ; currentPage = gopage;}
		if(Page<0) {
			Page=num*(PageNumber-1);
			currentPage=PageNumber;
		}
		if(Page>=t) {
			Page=0;
			currentPage=1;
		}
		document.getElementById(pageId).innerHTML = currentPage +'/'+PageNumber;
    	for(i=0;i<num;i++){
			n_page = i + Page;
			document.getElementById('cell_price'+i).innerHTML=productPrice[n_page];
            document.getElementById('cell_link'+i).href = rewrite_url(productName[n_page], productID[n_page]);
			document.getElementById('cell_link'+i).title = productName[n_page];
			document.getElementById('li'+i).style.display = 'block';
			if(productID[n_page] == null){
				document.getElementById('li'+i).style.display='none';
				continue;
			}
			if(num==8)document.getElementById('cell_img'+i).src=baseURL+"images/loading_img_s.gif";
			document.getElementById('cell_img'+i).alt=productName[n_page];
			document.getElementById('cell_img'+i).title=productName[n_page];
			loadImage('cell_img'+i,imgURL+productIMG[n_page]);
			if(cid != null){
				if(cid == productID[n_page]){
					document.getElementById('cell_img'+i).className = 'allborder';
				}
				else{
					document.getElementById('cell_img'+i).className = '';
				}
			}
		}
	}

	document.getElementById(pageId).innerHTML = currentPage +'/'+PageNumber;
	document.getElementById(Prev).onclick = function () {
		if(!activeClick) return false;
		updateProduct('pre');
	}
	document.getElementById(Next).onclick = function () {
		if(!activeClick) return false;
		updateProduct('next');
	}	
}

function postAjax(url,content,onComplete){
	var options=new Object();
	options.method="post";
	options.asynchronous=true;
	options.parameters=content;
	options.onComplete=onComplete;
	return new Ajax.Request(url, options);
}