//检查必填项
function CheckNotNull(objField, strText) {
  if (Trim(objField.value) == "") {
    alert("请填写“" + strText + "”！");
    objField.focus();
    return false;
  }
  return true;
}

//去除字符串左端空格
function LTrim(str) {
  return str.replace(/^\s*/, '');
}

//去除字符串右端空格
function RTrim(str) {
  return str.replace(/\s*$/, '');
}

//去除字符串两端空格
function Trim(str) {
  return LTrim(RTrim(str));
}

//检查字符串是否出现中文
function CheckNoChinese(objField, strText) {
  if(objField.value == "") return true;
  var RE = new RegExp("[^\x01-\x7F]");
  if (objField.value.search(RE) != -1) {
    alert("“" + strText + "”中不能出现中文！");
    objField.focus();
    return false;		
  }
  return true;
}

//检查是否为数值
function CheckNumber(objField, strText, numMinValue, numMaxValue) {
  if(objField.value == "") return true;
  if(isNaN(objField.value)){
    alert("“" + strText + "”中只能填写数字！");
    objField.focus();
    return false;
  }
  var numValue = parseFloat(objField.value);
  if(numMinValue != null){
    if(numValue < numMinValue){
      alert("“" + strText + "”的值不能小于 " + numMinValue.toString() + " ！");
      return false;
    }
  }
  if(numMaxValue != null){
    if(numValue > numMaxValue){
      objField.focus();
      alert("“" + strText + "”的值不能大于 " + numMaxValue.toString() + " ！");
      return false;
    }
  }
  return true;
}

//检查字符串长度
function CheckStringLength(objField, strText, numMinLen, numMaxLen){
  if(objField.value == "") return true;
  if(numMinLen != null){
    if(objField.value.length < numMinLen){
      alert("“" + strText + "”的长度不能少于 " + numMinLen.toString() + " 个字符！");
      objField.focus();
      return false;
    }
  }
  if(numMaxLen != null){
    if(objField.value.length > numMaxLen){
      alert("“" + strText + "”的长度不能多于 " + numMaxLen.toString() + " 个字符！");
      objField.focus();
      return false;
    }
  }
  return true;
}

//检查为Email
function CheckEmail(objField, strText)
{
  var objValue = Trim(objField.value);
  if (objValue=="") return true;
  var strErr = "“" + strText + "”不是正确的Email格式！";

  var regex = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
  if (regex.test(objValue)) 
  {
     var str = " !#$%^&*()+=|\{[]}:;'<,>?/" ;
     var str2 = '"';
     var result = true;
     for (var j = 0; j < objValue.length; j++) {
        if (str.indexOf(objValue.charAt(j)) != -1 || str2.indexOf(objValue.charAt(j)) != -1) {
          result = false;
          break; 
        }
     }
     if (result == true) {
        return true;
     }
     else {
		alert(strErr);
        objField.focus();
        return false;		
     }
   } 
   else {
	 alert(strErr);
     objField.focus();
     return false;		
   }
}

//检测为电话号码
function CheckPhone(objField, strText) 
{
    var objValue = Trim(objField.value);
    if (objValue=="") return true;
	var strErr = "“" + strText + "”不是正确的电话号码格式！";
	var reg=/(^[0-9]{3,4}\-[0-9]{3,8}$)|(^[0-9]{3,8}$)|(^\([0-9]{3,4}\)[0-9]{3,8}$)|(^0{0,1}1(3|5)[0-9]{9}$)/;
	if (!reg.exec(objValue)) {
		alert(strErr);
        objField.focus();
		return false;
	}
	return true;
}

//检验企业法人代码
function CheckCorpCode(objField, strText){
    var objValue = Trim(objField.value);
    if (objValue=="") return true;
	var strErr = "“" + strText + "”不是正确的企业法人代码格式！";
	var patrn=/^(\d){15}$/;
	if (!patrn.exec(objValue)) {
		alert(strErr);
        objField.focus();
		return false;
	}
	return true;
}

//校验邮政编码
function CheckPostalCode(objField, strText)
{
    var objValue = Trim(objField.value);
    if (objValue=="") return true;
	var strErr = "“" + strText + "”不是正确的邮政编码格式！";
    var patrn=/^[0-9]{1}(\d){5}$/;
	if (!patrn.exec(objValue)) {
		alert(strErr);
        objField.focus();
		return false;
	}
	return true;
}

//判断单选/复选必选
function CheckRadioNoClick(objField, strText)
{
	var strErr = "“" + strText + "”必须选择一个选项！";
	for (i=0;i<objField.length;i++){
		if (objField[i].checked) return true;
	}
	alert(strErr);
    objField[0].focus();
	return false;
}

//移除单选/复选的选择值
function RadioUnClick(objField)
{
	var i;
	for (i=0;i<objField.length;i++)
	{
		objField[i].checked = false;
	}
	objField.value='';
}

//移除输入框的值
function TextUnInput(objField)
{
	objField.value='';
}

//移除下拉框的值
function ListUnSelect(objField)
{
	var j=0;
	for( i=0;i<objField.options.length;i++ ) 
	{   
		objField.options[i].selected = false;
	}
	objField.value='';
}

//检测复选最多几项
function CheckCheckBoxMaxClick(objField, strText,maxNum )
{
	var j=0;   
	for( i=0;i<objField.length;i++ ) {   
		if(objField[i].checked) {   
		   j=j+1;   
		}   
	} 
	if( j > maxNum ){
		alert("最多只能选择" + maxNum +"项“"+ strText + "”");
		objField[0].focus();
		return false;
	}
	else {
		if( j==0 )	{
			alert("请选择“" + strText + "”" );   
			objField[0].focus();
			return false;
		}
		else return true;
	}
}

//检测复选最少几项
function CheckCheckBoxMinClick(objField, strText,minNum )
{
	var j=0;   
	for( i=0;i<objField.length;i++ ) {   
		if(objField[i].checked) {   
		   j=j+1;   
		}   
	} 
	if( j < minNum ){
		alert("最少必须选择" + minNum +"项“"+ strText + "”");
		objField[0].focus();
		return false;
	}
	else {
		if( j==0 )	{
			alert("请选择“" + strText + "”" );   
			objField[0].focus();
			return false;
		}
		else return true;
	}
}

//检测下拉必选
function CheckListNoSelect(objField, strText)
{
	for( i=0;i<objField.options.length;i++ ) {   
		if(objField.options[i].selected && objField.value != '') {   
		   return true;   
		}   
	} 
    alert( "请选择“" + strText + "”！");
	objField[0].focus();
	return false;
}

//检测下拉最多几项
function CheckListMaxSelect(objField, strText,maxNum )
{
	var j=0;   
	for( i=0;i<objField.options.length;i++ ) {   
		if(objField.options[i].selected) {   
		   j=j+1;   
		}   
	} 
	if( j > maxNum ){
		alert("最多只能选择" + maxNum +"项“"+ strText + "”");
		objField[0].focus();
		return false;
	}
	else {
		if( j==0 )	{
			alert("请选择“" + strText + "”" );   
			objField[0].focus();
			return false;
		}
		else return true;
	}
}

//检测下拉最少几项
function CheckListMinSelect(objField, strText,minNum )
{
	var j=0;   
	for( i=0;i<objField.options.length;i++ ){   
		if(objField.options[i].selected){   
		   j=j+1;   
		}   
	} 
	if( j < minNum ){
		alert("最少必须选择" + minNum +"项“"+ strText + "”");
		objField[0].focus();
		return false;
	}
	else{
		if( j==0 ){
			alert("请选择“" + strText + "”" );   
			objField[0].focus();
			return false;
		}
		else return true;
	}
}

//检测值在复选下拉选中
function IsInSelectedList(objField,optionValue )
{
   for( i=0;i<objField.options.length;i++ )
   {
	  if( objField.item(i).selected && objField.item(i).value == optionValue )
	  {
	     return true;
	  }
	}
	return false;
}

function IsInCheckBox(objField,optionValue )
{
	for( i=0;i<objField.length;i++ ) {
		if(objField[i].checked && objField[i].value == optionValue) {   
		   return true;   
		}   
	}
	return false;
}

//检测为短日期
function CheckDate(objField, strText)
{
    var objValue = Trim(objField.value);
    if (objValue=="") return true;
	var strErr = "“" + strText + "”不是正确的日期格式(例：2007-10-1)！";
    var r = objValue.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/); 
    if( r==null) {
		alert(strErr);
        objField.focus();
	    return false; 
	}
	var d= new Date(r[1], r[3]-1, r[4]); 
	var B = d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4];
    if( !B )
	{
		alert(strErr);
        objField.focus();
	    return false; 
	}
	return true;
}

//检测为身份证号
function CheckIDCardNo(objField, strText)
{
    var objValue = Trim(objField.value);
    if (objValue=="") return true;
	/*if (isNaN(objValue)) {
	   alert("“" + strText + "”输入的不是数字！"); 
       objField.focus();
	   return false;
	}*/
	var len = objValue.length, re; 
	if (len == 15)
		re = new RegExp(/^(\d{6})()?(\d{2})(\d{2})(\d{2})(\d{3})$/);
	else if (len == 18)
	{
	    re = new RegExp(/^(\d{6})()?(\d{4})(\d{2})(\d{2})(\d{3})[x|X|(\d{1})]$/);
	}
	else {
	   alert("“" + strText + "”输入的数字位数不正确！"); 
       objField.focus();
       return false;
	}
	var a = objValue.match(re);
	if (a != null)
	{
		if (len==15)
		{
			var D = new Date("19"+a[3]+"/"+a[4]+"/"+a[5]);
			var B = D.getYear()==a[3]&&(D.getMonth()+1)==a[4]&&D.getDate()==a[5];
		}
		else
		{
			var D = new Date(a[3]+"/"+a[4]+"/"+a[5]);
			var B = D.getFullYear()==a[3]&&(D.getMonth()+1)==a[4]&&D.getDate()==a[5];
		}
		if (!B) {
			alert("“" + strText + "”输入的身份证号 "+ a[0] +" 内出生日期不正确！"); 
			objField.focus();
            return false;
		}
	}
	else
	{
	   alert("“" + strText + "”输入不正确的身份证号!"); 
       objField.focus();
       return false;
	}

	return true;
}

//检测文件上传类型与大小
function CheckFileTypeSize(objField,strText,allowExt,maxSize)
{
	FileExt = objField.value.substr(objField.value.lastIndexOf(".")).toLowerCase();
	if( allowExt.indexOf(FileExt + "|") == -1) 
	{
	    alert( strText + " - 上传的文件扩展名仅支持：" + allowExt);
		objField.focus();
		return false;
	}
	return true;
}

//清除文件选择框的值
function FileUnSelect(objField)
{
	objField.outerHTML = objField.outerHTML;
}

function getID(_sId){
	return document.getElementById(_sId);
}

//检查某值在某字符串中
function isInValueList(theValue,valueList)
{
    if( Trim(valueList) == "" )  return false;
	var valueArray = valueList.split(',');
	for( i=0;i<valueArray.length;i++ ){   
		if( valueArray[i]== theValue ){   
		   return true;   
		}   
	}
	return false;
}

//检测为网址
function CheckURL(objField, strText) 
{
    var objValue = Trim(objField.value);
    if (objValue=="") return true;
	var strErr = "“" + strText + "”不是正确的URL格式！";
	var reg=/^([hH][tT]{2}[pP]:\/\/|[hH][tT]{2}[pP][sS]:\/\/)*[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/
	if (!reg.test(objValue)) {
		alert(strErr);
        objField.focus();
		return false;
	}
	return true;
}

//计算可分配的比重值
function ReCalcSum(questionID,minOptionNum,maxOptionNum,maxNum)
{
    var obj,optionTotalNum = 0;
	for(i=minOptionNum;i<=maxOptionNum;i++)
	{
	    obj = eval("document.Survey_Form.option_" + questionID + "_" + i );
        optionTotalNum += Number(obj.value);
	}
    var rtnValue = maxNum - optionTotalNum;
	var tarObj = eval("document.Survey_Form.option_" + questionID + "_total");
	tarObj.value = rtnValue.toString();
}