var imageext = new Array('jpg', 'jpeg', 'gif', 'png');
var flashext = new Array('swf');

function strLen(str) {
	var charset = document.charset; 
	var len = 0;
	for(var i = 0; i < str.length; i++) {
		len += str.charCodeAt(i) < 0 || str.charCodeAt(i) > 255 ? (charset == 'utf-8' ? 3 : 2) : 1;
	}
	return len;
}

function fileext(filename) {
	if(filename == null || filename == '') {
		return '';
	}
	var ext = null;
	var num = filename.lastIndexOf(".");
	if(num != -1) {
		ext = filename.substring(num + 1);
	} else {
		ext = '';
	}
	return ext;
}

function isfileext(filename, extarr) {
	var ext = fileext(filename).toLowerCase();
	for(var i = 0; i < extarr.length; i++) {
		if(extarr[i] == ext){
			return true;
		}
	}
	return false;
}

function fill(setid, parentid, arr, value) {
	setid = document.getElementById(setid);
	if(setid != null) {
		setid.options[0]=new Option('請選擇','');
		opt = 0;
		if(parentid == '') {
			for(i=0;i<arr.length;i++) {
				setid.options[i+1]=new Option(arr[i][1],arr[i][0]);
				if(arr[i][1] == value) {
					opt = i+1;
				}
			}
			setid.options[opt].selected=true;
			setid.length=i+1;
		} else {
			parentcode = document.getElementById(parentid).value;
			count=1;
			if(parentcode != '') {
				for(i=0;i<arr.length;i++) {
					if(arr[i][0].toString().substring(0,parentcode.length)==parentcode.substring(0, parentcode.length)) {
						setid.options[count]=new Option(arr[i][1],arr[i][0]);
						if(value != null && arr[i][1] == value) {
							opt = count;
						}
						count=count+1;
					}
				}
			}
			setid.options[opt].selected=true;
			setid.length=count;
		}
	}
}

function validate(theform) {
	if(fieldinfo.length > 0) {
		for(i = 0; i < fieldinfo.length; i++) {
			obj = null;
			if(fieldinfo[i][2] == 'checkbox' && fieldinfo[i][4] == '1') {
				ischoose = false;
				var nodes = document.getElementsByTagName('input');
				if(nodes) {
					for(j = 0; j < nodes.length; j++) {
						var node = nodes[j];
						if (node.name == fieldinfo[i][0]+'[]') {
							if(obj == null) obj = node;
							if(node.checked == true) {
								ischoose = true;
								break;
							}
							
						}
					}
					if(!ischoose) {
						alert('請您選擇一個'+fieldinfo[i][1]);
						obj.focus();
						return false;
					}
				}
			} else {
				ischoose = true;
				obj = document.getElementById(fieldinfo[i][0]);
				if(fieldinfo[i][4] == '1' && obj && strLen(obj.value) < 1) {
					ischoose = false;
					if(fieldinfo[i][2] == 'text' || fieldinfo[i][2] == 'textarea') {
						alert('請您輸入'+fieldinfo[i][1]);
					} else if(fieldinfo[i][2] == 'img' || fieldinfo[i][2] == 'flash' || fieldinfo[i][2] == 'file' || fieldinfo[i][2] == 'timestamp') {
						objvalue = document.getElementById(fieldinfo[i][0]+'_value');
						if(obj && strLen(objvalue.value) < 1) {
							alert('您未設置'+fieldinfo[i][1]+',請檢查確認');
						} else {
							ischoose = true;
						}
					} else {
						alert("請您選擇一個"+fieldinfo[i][1]);
					}
				}
				if(obj && obj.value != '') {
					if(fieldinfo[i][2] == 'text' || (fieldinfo[i][2] == 'textarea' && fieldinfo[i][3] != 0)) {
						if(fieldinfo[i][5] != 'TEXT' && fieldinfo[i][5] != 'MEDIUMTEXT' && fieldinfo[i][5] != 'LONGTEXT' && fieldinfo[i][5] != 'FLOAT' && fieldinfo[i][5] != 'DOUBLE') {
							if (strLen(obj.value) > fieldinfo[i][3]) {
								ischoose = false;
								alert('您輸入的'+fieldinfo[i][1]+'長度不符合要求,目前長度為'+strLen(obj.value)+'字符,請保證在'+fieldinfo[i][3]+'字符以內');
							}
						}
					} else if(fieldinfo[i][2] == 'img' || fieldinfo[i][2] == 'flash') {
						if (!isfileext(obj.value, (fieldinfo[i][2] == 'img' ? imageext : flashext))) {
							ischoose = false;
							alert('您輸入的'+fieldinfo[i][1]+'格式不正確,請檢查確認');
						}
					}
				}
				if(!ischoose) {
					obj.focus();
					return false;
				}
			}
		}
	}

	return true;
}

var fieldinfo = new Array(
new Array('subject', '活動主題', 'text', '80', '1', 'CHAR'),
new Array('catid', '活動分類', 'select', '6', '1', 'SMALLINT'),
new Array('subjectimage', '場所圖片', 'img', '80', '0', 'CHAR'),
new Array('organizer', '組織者', 'textarea', '0', '1', 'TEXT'),
new Array('time', '詳細時間', 'text', '40', '0', 'CHAR'),
new Array('site', '地點', 'text', '100', '1', 'CHAR'),
new Array('quantity', '人數', 'text', '4', '1', 'SMALLINT'),
new Array('contact', '聯繫方式', 'textarea', '255', '0', 'VARCHAR'),
new Array('charge', '費用', 'text', '100', '1', 'CHAR'),
new Array('content', '活動內容', 'textarea', '0', '1', 'TEXT'),
new Array('prompt', '提示', 'textarea', '0', '0', 'TEXT')
);