//Check CheckBox
function chk_CheckBox(objChk, DSCR)
{
	var flgChk = false;
	if(typeof(objChk) != "undefined")
	{
		if(isNaN(objChk.length) == true)
		{
			if(objChk.checked == true) flgChk = true;
		}
		else
		{
			for(inx=0; inx<objChk.length; inx++)
			{
				if(objChk(inx).checked == true) flgChk = true;
			}
		}
	}
	if(flgChk == false) return DSCR + " 必須選取!!\n";
	else return "";
}
	


//不能為0
function chk_NumZero(obj, DSCR)
{
	var blnZero;
	blnZero=1;
	for(idx=0; idx<obj.length; idx++)
	{
		if(obj.charAt(idx) != '0' ) return "";
	}
	
	if(blnZero=1)
	{
		return(DSCR + " 不能為0!!\n");
	}
}


//1:不能有數字以外的字元
//2:不能有數字及．以外的字元
function chk_Num(obj,nMethod,DSCR)
{
	for(idx=0; idx<obj.length; idx++)
	{
		if(nMethod == 1 )
		{
			if(!((obj.charAt(idx) >= '0' && obj.charAt(idx) <= '9')))
			{
					return(DSCR + " 不能有數字以外的字元!!\n");
			}
		}
		else if(nMethod == 2 )
		{
			if(!((obj.charAt(idx) >= '0' && obj.charAt(idx) <= '9') || obj.charAt(idx) == '.'))
			{
				return(DSCR + " 不能有數字及．以外的字元!!\n");
			}
		}
    }
    return "";
}


//1:不能有數字以外的字元及不能大於nScope
//2:不能有數字及．以外的字元及不能大於nScope
function chk_NumValue(obj,nScope,nMethod,DSCR)
{
	for(idx=0; idx<obj.length; idx++)
	{
		if(nMethod == 1 )
		{
			if(!((obj.charAt(idx) >= '0' && obj.charAt(idx) <= '9')))
			{
				return(DSCR + " 不能有數字以外的字元!!\n");
			}
		}
		else if(nMethod == 2 )
		{
			if(!((obj.charAt(idx) >= '0' && obj.charAt(idx) <= '9') || obj.charAt(idx) == '.'))
			{
				return(DSCR + " 不能有數字及．以外的字元!!\n");
			}
	    }
	}
	if(parseFloat(obj) > nScope) return(DSCR + " 不能大於" + nScope + "!!\n");
    return "";
}


//Check Telphone Number
function chk_TelNum(num, DSCR)
{
	var error = false;
    for( idx = 0 ; idx < num.length ; idx++ ) 
    {
//        if( !( ( num.charAt(idx) >= '0' && num.charAt(idx) <= '9' ) || ( num.charAt(idx) == '-' ) || ( num.charAt(idx) == '#' ) || ( num.charAt(idx) == '(' ) || ( num.charAt(idx) == ')' )) ) 
        if( !( ( num.charAt(idx) >= '0' && num.charAt(idx) <= '9' ) || ( num.charAt(idx) == '-' ) || ( num.charAt(idx) == '(' ) || ( num.charAt(idx) == ')' )) ) 
        {
            error = true;
            break;
        }
    }
   // if( error == true ) return DSCR + " 只能是數字及'-','#','(',')'符號!!\n";
    if( error == true ) return DSCR + " 只能是數字及'-'符號!!\n";
    return "";
}


//Check E-Mail
function chk_EMail(email ,DSCR)
{
	var len = email.length;
	var ck =0;
	if(len==0) return "";
	for(var i=0;i<len;i++)
	{  
		var c= email.charAt(i);
		if(!((c>="A"&&c<="Z")||(c>="a"&&c<="z")||(c>="0"&&c<="9")||(c=="-")||(c=="_")||(c==".")||(c=="@")))
			return DSCR + " 只能是數字,英文字母及'-','_'等符號!!\n";
	}
	if((email.indexOf("@")==-1)||(email.indexOf("@")==0)||(email.indexOf("@")==(len-1)))
		return DSCR + " 不合法!!\n";
	if((email.indexOf("@")!=-1)&&(email.substring(email.indexOf("@")+1,len).indexOf("@")!=-1))
		return DSCR + " 不合法!!\n";
	if((email.indexOf(".")==-1)||(email.indexOf(".")==0)||(email.lastIndexOf(".")==(len-1)))
		return DSCR + " 不完全!!\n";
	return "";
}
	

//Check Identity	
function chk_identity ( id )
{
	if( id.length == 0 ) return "";
	var m_id = id;
	//m_id = m_id.toUpperCase();
	//id.value = m_id;
	//if(m_id.length>10) return "您的身分證字號超過10個字!!\n";
	if(m_id.length<10) return "您的身分證字號不滿10個字!!\n";
	var c = m_id.charAt(0);
	if(c<"A" || c> "Z") return "您的身分證字號第一碼必須是大寫的英文字母 !\n";
	c = m_id.charAt(1);
	if(c!="1" && c!="2") return "您的身分證字號第二碼有問題!!\n";
	for(i=1;i<10;i++)
      if(isNaN(parseFloat(m_id.charAt(i)))) return "您的身分證字號第二到十碼有問題 !\n";
	var m_alph = new Array("A","B","C","D","E","F","G","H","J","K","L","M","N","P","Q","R","S","T","U","V","X","Y","W","Z","I","O");
	var m_num = new Array("10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","35");
	var n=0;
	for(i=0;i<m_alph.length;i++)
		if(m_id.charAt(0)==m_alph[i]) n=i;
	var m_tot1 = parseFloat(m_num[n].charAt(0)) + (parseFloat(m_num[n].charAt(1)) * 9);
	var m_tot2 = 0;
	for(i=1;i<m_id.length-1;i++) m_tot2 = m_tot2 + parseFloat(m_id.charAt(i))*(9-i);
	var m_tot3 = parseFloat(m_id.charAt(9));
	var m_tot4 = m_tot1 + m_tot2 + m_tot3;
	if((m_tot4 % 10)!=0) return "您的身分證字號有問題!!\n";
	return "";
}


//Check Date
function chk_Date(DateStr, DSCR){
	if(DateStr.length > 10) return (DSCR + " 格式錯誤，超過10位數!!\n");
	if(DateStr.length < 8) return (DSCR + " 格式錯誤，少於8位數!!\n");


	var DateArr = new Array(DateStr.split("/").length);
	DateArr = DateStr.split("/");
 
	if(DateArr.length != 3) return (DSCR + " 格式錯誤,須為yyyy/mm/dd!!\n");
	else{
	    for(idx=0; idx<DateStr.length; idx++){
    	    if(!((DateStr.charAt(idx) >= '0' && DateStr.charAt(idx) <= '9' ) || ( DateStr.charAt(idx) == '/'))) {
    	        return(DSCR + " 不能有 數字 及 / 以外的字元!!\n");
    	    }
    	}
		
		if(DateArr[0].length != 4) return(DSCR + " 年須為四位數!!\n");
		if(DateArr[1] > 12) return(DSCR + " 月不可大於12!!\n");
		if(DateArr[1] == 2){
			if((DateArr[0] % 4 != 0) && (DateArr[2] > 28))return(DSCR + " " + DateArr[0] + "年2月不可大於28天!!\n");
			else if(DateArr[2] > 29) return(DSCR + " " + DateArr[0] + "年2月不可大於29天!!\n");
		}
		else{
			if((DateArr[1] == 1) || (DateArr[1] == 3) || (DateArr[1] == 5) || (DateArr[1] == 7) || (DateArr[1] == 8) || (DateArr[1] == 10) || (DateArr[1] == 12)){
				if(DateArr[2] > 31) return(DSCR + " " + DateArr[1] + "月不可大於31天!!\n");
			}
			else if(DateArr[2] > 30) return(DSCR + " " + DateArr[1] + "月不可大於30天!!\n");
		}
	}	

	return "";
}
function chkTxt(obj,DSCR){
	var re = /[a-zA-Z]{1,}/;
	if(re.test(obj)){
		return(DSCR+" 格式錯誤，請輸入中文或數字!!\n");
	}
	return "";
}