//function $(id){return document.getElementById(id);}

var xmlHttp;
//创建对象
function createXmlHttp(){
    if (window.XMLHttpRequest) {
       xmlHttp = new XMLHttpRequest();//返回一个XMLHttpRequest对象
    } else {
       xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");//建立XMLHttp对象成功
    }
}

//创建对象2
function createXmlHttp2() 
{
  var browser = navigator.appName;
  //使用IE，则使用XMLHttp对象
  if(browser == "Microsoft Internet Explorer") {
    var arrVersions = ["Microsoft.XMLHttp", "MSXML2.XMLHttp.4.0", "MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp", "MSXML2.XMLHttp.5.0"];
    for (var i=0; i < arrVersions.length; i++) {
      try 
      {
	//从中找到一个支持的版本并建立XMLHttp对象
        xmlHttp = new ActiveXObject(arrVersions[i]); 
        return xmlHttp;
      } 
      catch(exception){}
    }
  }
  else{
    //否则返回一个XMLHttpRequest对象
    xmlHttp = new XMLHttpRequest(); 
    return xmlHttp;
  }   
}

/*选择列表框 start
表单名称使用 login*/
var SelectAllFlag = false;
//取消全选
function goToForNoneSelect(objForm){
    var doc = objForm;
	
	if(doc.cheIFSelected==null){
	  alert("当前页没有数据！");
	  return;
	}
    var l=doc.cheIFSelected.length 
    if(l==null) { 
      l=1; 
    } 

    if(l==1){ 
      if(!SelectAllFlag){ 
        doc.cheIFSelected.checked = false;
      }else{ 
        doc.cheIFSelected.checked = false;
	  } 
    }else{ 
      for(i = 0; i < l; i++){
        if(!SelectAllFlag){ 
          doc.cheIFSelected[i].checked = false; 
        }else{ 
          doc.cheIFSelected[i].checked = false; 
        } 
      } 
    } 
}

//全选
function goToForAllSelect(objForm){
    var doc = objForm;
	
	if(doc.cheIFSelected==null){
	  alert("当前页没有数据！");
	  return;
	}
    var l=doc.cheIFSelected.length 
    if(l==null) { 
      l=1; 
    } 

    if(l==1){ 
      if(!SelectAllFlag){ 
        doc.cheIFSelected.checked = true; 
      }else{ 
        doc.cheIFSelected.checked = true; 
      } 
    }else{ 
      for(i = 0; i < l; i++){
        if(!SelectAllFlag){ 
          doc.cheIFSelected[i].checked = true; 
        }else{ 
          doc.cheIFSelected[i].checked = true; 
        } 
      } 
    } 
}
//选择列表框 end

//时间选择框
function loadCalendar(field){
   var rtn = window.showModalDialog("js/calendar.htm","","dialogWidth:280px;dialogHeight:250px;status:no;help:no;scrolling=no;scrollbars=no");
	if(rtn!=null)
		field.value=rtn;
   return;
}

function clearNoNum(obj){ 
    obj.value = obj.value.replace(/[^\d.]/g,"");  //清除“数字”和“.”以外的字符 
    obj.value = obj.value.replace(/^\./g,"");  //验证第一个字符是数字而不是. 
    obj.value = obj.value.replace(/\.{2,}/g,"."); //只保留第一个. 清除多余的. 
    obj.value = obj.value.replace(".","$#$").replace(/\./g,"").replace("$#$","."); 
}

function clearNoCode(obj){ 
    obj.value = obj.value.replace(/[^\a-zA-Z0-9]/g,"");  //清除“数字字母”以外的字符 
}