(function() {
	var $backToTopTxt = "返回顶部", $backToTopEle = $('<div class="backToTop"></div>').appendTo($("body"))
		.text("").attr("title", $backToTopTxt).click(function() {
			$("html, body").animate({ scrollTop: 0 }, 500);
	}), $backToTopFun = function() {
		var st = $(document).scrollTop(), winh = $(window).height();
		(st > 0)? $backToTopEle.show(): $backToTopEle.hide();	
		//IE6下的定位
		if (!window.XMLHttpRequest) {
			$backToTopEle.css("top", st + winh - 250);	
		}
	};
	$(window).bind("scroll", $backToTopFun);
	$(function() { $backToTopFun(); });
})();

// JavaScript Document
/*************************************************
 Validator v1.01
 code by 我佛山人
 wfsr@cunite.com
 http://www.cunite.com
*************************************************/
 Validator = {
 Require : /^\S+/,
 Email : /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/,
 Phone : /^((\(\d{3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}$/,
 Mobile : /^((\(\d{3}\))|(\d{3}\-))?1[358]\d{9}$/,
 Url : /^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/,
 IdCard : /^\d{15}(\d{2}[A-Za-z0-9])?$/,
 Currency : /^\d+(\.\d+)?$/,
 Number : /^\d+$/,
 Zip : /^[1-9]\d{5}$/,
 QQ : /^[1-9]\d{4,8}$/,
 Integer : /^[-\+]?\d+$/,
 Double : /^[-\+]?\d+(\.\d+)?$/,
 English : /^[A-Za-z]+$/,
 Chinese :  /^[\u0391-\uFFE5]+$/,
 UnSafe : /^(([A-Z]*|[a-z]*|\d*|[-_\~!@#\$%\^&\*\.\(\)\[\]\{\}<>\?\\\/\'\"]*)|.{0,5})$|\s/,
 IsSafe : function(str){return !this.UnSafe.test(str);},
 SafeString : "this.IsSafe(value)",
 Limit : "this.limit(value.length,getAttribute('min'),  getAttribute('max'))",
 LimitB : "this.limit(this.LenB(value), getAttribute('min'), getAttribute('max'))",
 Date : "this.IsDate(value, getAttribute('min'), getAttribute('format'))",
 Repeat : "value == document.getElementsByName(getAttribute('to'))[0].value",
 Range : "getAttribute('min') < value && value < getAttribute('max')",
 Compare : "this.compare(value,getAttribute('operator'),getAttribute('to'))",
 Custom : "this.Exec(value, getAttribute('regexp'))",
 Group : "this.MustChecked(getAttribute('name'), getAttribute('min'), getAttribute('max'))",
 ErrorItem : [document.forms[0]],
 ErrorMessage : ["\t\t\t\t"],
 Validate : function(theForm, mode){
  var obj = theForm || event.srcElement;
  var count = obj.elements.length;
  this.ErrorMessage.length = 1;
  this.ErrorItem.length = 1;
  this.ErrorItem[0] = obj;
  for(var i=0;i<count;i++){
   with(obj.elements[i]){
    var _dataType = getAttribute("dataType");
    if(typeof(_dataType) == "object" || typeof(this[_dataType]) == "undefined")  continue;
    this.ClearState(obj.elements[i]);
    if(getAttribute("require") == "false" && value == "") continue;
    switch(_dataType){
     case "Date" :
     case "Repeat" :
     case "Range" :
     case "Compare" :
     case "Custom" :
     case "Group" : 
     case "Limit" :
     case "LimitB" :
     case "SafeString" :
      if(!eval(this[_dataType])) {
       this.AddError(i, getAttribute("msg"));
      }
      break;
     default :
      if(!this[_dataType].test(value)){
       this.AddError(i, getAttribute("msg"));
      }
      break;
    }
   }
  }
  if(this.ErrorMessage.length > 1){
   mode = mode || 1;
   var errCount = this.ErrorItem.length;
   switch(mode){
   case 2 :
    for(var i=1;i<errCount;i++)
     this.ErrorItem[i].style.color = "red";
   case 1 :
    alert(this.ErrorMessage.join("\n"));
    this.ErrorItem[1].focus();
    break;
   case 3 :
    for(var i=1;i<errCount;i++){
    try{
     var span = document.createElement("SPAN");
     span.id = "__ErrorMessagePanel";
     span.style.color = "red";
     this.ErrorItem[i].parentNode.appendChild(span);
     span.innerHTML = this.ErrorMessage[i].replace(/\d+:/,"");
     }
     catch(e){alert(e.description);}
    }
    this.ErrorItem[1].focus();
    break;
   default :
    alert(this.ErrorMessage.join("\n"));
    break;
   }
   return false;
  }
  return true;
 },
 limit : function(len,min, max){
  min = min || 0;
  max = max || Number.MAX_VALUE;
  return min <= len && len <= max;
 },
 LenB : function(str){
  return str.replace(/[^\x00-\xff]/g,"**").length;
 },
 ClearState : function(elem){
  with(elem){
   if(style.color == "red")
    style.color = "";
   var lastNode = parentNode.childNodes[parentNode.childNodes.length-1];
   if(lastNode.id == "__ErrorMessagePanel")
    parentNode.removeChild(lastNode);
  }
 },
 AddError : function(index, str){
  this.ErrorItem[this.ErrorItem.length] = this.ErrorItem[0].elements[index];
  this.ErrorMessage[this.ErrorMessage.length] = this.ErrorMessage.length + ":" + str;
 },
 Exec : function(op, reg){
  return new RegExp(reg,"g").test(op);
 },
 compare : function(op1,operator,op2){
  switch (operator) {
   case "NotEqual":
    return (op1 != op2);
   case "GreaterThan":
    return (op1 > op2);
   case "GreaterThanEqual":
    return (op1 >= op2);
   case "LessThan":
    return (op1 < op2);
   case "LessThanEqual":
    return (op1 <= op2);
   default:
    return (op1 == op2);            
  }
 },
 MustChecked : function(name, min, max){
  var groups = document.getElementsByName(name);
  var hasChecked = 0;
  min = min || 1;
  max = max || groups.length;
  for(var i=groups.length-1;i>=0;i--)
   if(groups[i].checked) hasChecked++;
  return min <= hasChecked && hasChecked <= max;
 },
 IsDate : function(op, formatString){
  formatString = formatString || "ymd";
  var m, year, month, day;
  switch(formatString){
   case "ymd" :
    m = op.match(new RegExp("^((\\d{4})|(\\d{2}))([-./])(\\d{1,2})\\4(\\d{1,2})$"));
    if(m == null ) return false;
    day = m[6];
    month = m[5]--;
    year =  (m[2].length == 4) ? m[2] : GetFullYear(parseInt(m[3], 10));
    break;
   case "dmy" :
    m = op.match(new RegExp("^(\\d{1,2})([-./])(\\d{1,2})\\2((\\d{4})|(\\d{2}))$"));
    if(m == null ) return false;
    day = m[1];
    month = m[3]--;
    year = (m[5].length == 4) ? m[5] : GetFullYear(parseInt(m[6], 10));
    break;
   default :
    break;
  }
  if(!parseInt(month)) return false;
  month = month==12 ?0:month;
  var date = new Date(year, month, day);
        return (typeof(date) == "object" && year == date.getFullYear() && month == date.getMonth() && day == date.getDate());
  function GetFullYear(y){return ((y<30 ? "20" : "19") + y)|0;}
 }
 }
 
 
 /*input*/
 function initPlaceHolders(){
    if('placeholder' in document.createElement('input')){ //如果浏览器原生支持placeholder
        return ;
    }
    function target (e){
        var e=e||window.event;
        return e.target||e.srcElement;
    };
    function _getEmptyHintEl(el){
        var hintEl=el.hintEl;
        return hintEl && g(hintEl);
    };
    function blurFn(e){
        var el=target(e);
        if(!el || el.tagName !='INPUT' && el.tagName !='TEXTAREA') return;//IE下，onfocusin会在div等元素触发 
        var    emptyHintEl=el.__emptyHintEl;
        if(emptyHintEl){
            //clearTimeout(el.__placeholderTimer||0);
            //el.__placeholderTimer=setTimeout(function(){//在360浏览器下，autocomplete会先blur再change
                if(el.value) emptyHintEl.style.display='none';
                else emptyHintEl.style.display='';
            //},600);
        }
    };
    function focusFn(e){
        var el=target(e);
        if(!el || el.tagName !='INPUT' && el.tagName !='TEXTAREA') return;//IE下，onfocusin会在div等元素触发 
        var emptyHintEl=el.__emptyHintEl;
        if(emptyHintEl){
            //clearTimeout(el.__placeholderTimer||0);
            emptyHintEl.style.display='none';
        }
    };
    if(document.addEventListener){//ie
        document.addEventListener('focus',focusFn, true);
        document.addEventListener('blur', blurFn, true);
    }
    else{
        document.attachEvent('onfocusin',focusFn);
        document.attachEvent('onfocusout',blurFn);
    }

    var elss=[document.getElementsByTagName('input'),document.getElementsByTagName('textarea')];
    for(var n=0;n<2;n++){
        var els=elss[n];
        for(var i =0;i<els.length;i++){
            var el=els[i];
            var placeholder=el.getAttribute('placeholder'),
                emptyHintEl=el.__emptyHintEl;
            if(placeholder && !emptyHintEl){
                emptyHintEl=document.createElement('span');
                emptyHintEl.innerHTML=placeholder;
                emptyHintEl.className='emptyhint';
                emptyHintEl.onclick=function (el){return function(){try{el.focus();}catch(ex){}}}(el);
                if(el.value) emptyHintEl.style.display='none';
                el.parentNode.insertBefore(emptyHintEl,el);
                el.__emptyHintEl=emptyHintEl;
            }
        }
    }
}

initPlaceHolders();