function trim(str) {
	res="";
	for(var i=0; i< str.length; i++) {
		if (str.charAt(i) != " " && str.charAt(i) != "　") {
			res +=str.charAt(i);
		}
	}
	return res;
}

var bName = navigator.appName;
nc = (bName == "Netscape") ? true : false;
ie = (bName == "Microsoft Internet Explorer") ? true : false;

function Check_num() {
	if(nc) document.onkeypress = keyDown;
	else if (event.keyCode < 48 || event.keyCode > 57) event.returnValue = false;
}

function keyDown(e){
	var nkey;
	var nkey=e.which;
	if (nkey < 48 || nkey > 57) return false;
	if (nkey >= 48 && nkey <= 57 || nkey==8 || nkey==0 || nkey==13) return true;
	else return false;
}

/*檢查是否為Email格式*/
function Checkmail() {
	if (form1.m_email.value != ""){
    var mem_mail1=form1.m_email.value;
    var pattern = /^\w+(-?\w+|\.?\w+|\w?)\@[\w\.]+\w+$/;
    flag = pattern.test(mem_mail1);
    if (!(flag)) {
      alert("電子郵件格式不正確!!");
      form1.m_email.value="";
      form1.m_email.focus();
      return(false);
    }
  }
	return(true);
}

//判斷身份證
function firstlettererr(id){ 
	var fl=id.value.substr(0,1); 
	var T="ABCDEFGHJKLMNPQRSTUVWXYZ"; //*24個*// 
	var smp=id.value.substr(0,1) 
	if (T.indexOf(smp) == -1) { return false; } else { return true; } 
} 

function checkid(id) { 
	if(id.value.length==10) return true;
	else return false;
} 

function chfastid(id) { 
	var c = id.value.charAt(0); 
	if(c<"A" || c> "Z") return false;
	else return true; 
} 

function ch12fastid(id) { 
	var c = id.value.charAt(1); 
	if(c!="1" && c!="2") return false;
	else return true; 
} 

function idmanber(id) { //=====後九碼為數字// 
	var bmp; 
	var d="0123456789"; 
	var bab=id.value.length-1; 
	for (var i=1;i<=bab;i++){ 
		bmp=id.value.substr(i,1) 
		if (d.indexOf(bmp) == -1) { return false; } 
	} 
	if(id.value != "0") return true; 
	else return false;
} 

function idchackok(id) { //規則// 
	var 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 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<alph.length;i++) 
	if(id.value.charAt(0)==alph[i]) 
	n=i; 
	var tot1 = parseFloat(num[n].charAt(0)) + (parseFloat(num[n].charAt(1)) * 9); 
	var tot2 = 0; 
	for(i=1;i<id.value.length-1;i++) 
	tot2 = tot2 + parseFloat(id.value.charAt(i))*(9-i); 
	var tot3 = parseFloat(id.value.charAt(9)); 
	var tot4 = tot1 + tot2 + tot3; 
	if((tot4 % 10)!=0) return false; 
	else return true;
} 


function idChech(id){ 
	if(checkid(id) == false){ 
		alert("您的身份證字號位數不對!!"); 
		return false; 
	} 
	if(chfastid(id) == false){ 
		alert("您的身分證字號第一碼必須是大寫的英文字母 !"); 
		return false; 
	} 
	if(ch12fastid(id) == false){ 
		alert("您的身分證字號第二碼有問題 !"); 
		return false; 
	} 
	if(firstlettererr(id) == false){ 
		alert("您的身份證字號錯誤!!"); 
		return false; 
	} 
	if(idmanber(id) == false){ 
		alert("您的身份證字號後9碼應為數字!!"); 
		return false; 
	} 
	if(idchackok(id) == false){ 
		alert("您的身分證字號有問題 !"); 
		return false; 
	} 
	return true;
}