<!--
//var is_opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
var START_PAGE = 1;
var STR_DISC_NAME = 'div_disc_';
var currentPage = START_PAGE;
var firstLoad = true;

function clearInput(obj, orgVal) {
	if (firstLoad && (obj.value == orgVal)) {
		obj.value = '';
		firstLoad = false;
	}
}

function upImgPreview(obj, imgId, orgSrc){
	if (obj.value != '') {
		_get(imgId).src = obj.value;
	} else {
		_get(imgId).src = orgSrc;
	}
}

function _get(idName){
	return document.getElementById(idName);
}

function addInput(inputId) {
	var parentId = 'div_' + inputId;
	var divInput = document.createElement('div');
	var str = '<input class="input01" type="text" name="'+inputId+'" />'
		+ '<img src="'+IMG_URL+'images/jiahao.gif" alt="" onclick="addInput(\''+inputId+'\');"/>'
		+ '<img src="'+IMG_URL+'images/jianhao.gif" alt="" onclick="delInput(this.parentNode);"/>';
	divInput.innerHTML = str;
	_get(parentId).appendChild(divInput);
}

function addDisc(parentId) {
	currentPage++;
	var divDisc = document.createElement('div');
	divDisc.id = STR_DISC_NAME+currentPage;
	divDisc.className = 'four';
	var str = ''
		+'<input type="hidden" name="title_'+currentPage+'" id="title_'+currentPage+'" value=""/>'
		+'<input type="hidden" name="plot_set_'+currentPage+'" id="plot_set_'+currentPage+'" value="'+currentPage+'"/>'
		+'<div class="yeceng">'
		+'<div class="fourye">第 '+currentPage+' 页</div>'
		+'<span>第<input class="input04" type="text" name="title_start_'+currentPage+'" id="title_start_'+currentPage+'"/>集&nbsp;&nbsp; - - </span>'
		+'<span>第<input class="input04" type="text" name="title_end_'+currentPage+'" id="title_end_'+currentPage+'"/>集</span>'
		+'</div>'
		+'<div>'
		+'<textarea id="plot_value_'+currentPage+'" name="plot_value_'+currentPage+'" cols="90" rows="13"></textarea>'
		+'<img src="'+IMG_URL+'images/jiahao.gif" alt="" onclick="addDisc(\''+parentId+'\');"/>'
		+'</div>';
	divDisc.innerHTML = str;
	_get(parentId).appendChild(divDisc);
}

function delDisc() {
	if (currentPage <= START_PAGE)
	{
		return false;
	}
	var objId = STR_DISC_NAME + currentPage;
	obj = _get(objId);
	delInput(obj);
	currentPage--;
}

function delInput(obj) {
	obj.parentNode.removeChild(obj);
}

function chkInput(obj){
	if(!obj.value || obj.value == '' || obj.value.length <= 0){
		_get('err_' + obj.id).innerHTML = '请您填写必填项！';
		obj.focus();
		return false;
	} else {
		_get('err_' + obj.id).innerHTML = '';
		return true;
	}
}

function chkForm(objForm){
	if (!chkInput(_get('cn_name'))) {
		alert('请您填写必填项！');
		return false;
	}
	if (!chkInput(_get('logo'))) {
		alert('请您上传海报图片！');
		return false;
	}
	if (_get('logo').value != '' && _get('logo') != null) {
		if (!chkPicType(_get('logo'))) {
			alert("您上传的图片必须为jpg格式！");
			return false;
		}
	}
	if (_get('catege').value == 2) {
		if (!putPageDisc()) {
			return false;
		}
	}
	clearInput(_get('tags'), '空格分割');
	var elems = objForm.elements;
	for(var i = 0; i < elems.length; i++){
		var elem = elems[i];
		if (elem.type == "text" || elem.type == "textarea") {
		
		}
	}
	return true;
}

function putPageDisc(){
	for(var i = 1; i <= currentPage; i++){
		if (_get('plot_value_'+i).value == '') {
			if (i == 1) {
				_get('page_num').value = 0;
				return true;
			}
			alert('请您填写介绍');
			_get('plot_value_'+i).focus();
			return false;
		}
		var startObj = _get('title_start_'+i);
		var endObj = _get('title_end_'+i);
		var val = '';
		if (startObj.value == '') {
			alert('请您至少填写开始集数');
			startObj.focus();
			return false;
		} else {
			if(!chkNum(startObj)){
				return false;
			}
			val = '第'+startObj.value+'集';
			if (endObj.value != '') {
				if(!chkNum(endObj)){
					return false;
				}
				val = val + '-第'+endObj.value+'集';
			}
		}
		_get('title_' + i).value = val;
	}
	_get('page_num').value = currentPage;
	return true;
}

function chkNum(obj) {
	if(!obj.value.match(/^[1-9]\d*|0$/)){
		alert('请您在集数填写整数');
		obj.focus();
		return false;
	} else {
		return true;
	}
}

function chkPicType(obj) {
	var objVal = obj.value;
	var i = objVal.lastIndexOf('.');
	var type = objVal.substr(i+1).toLowerCase();
	if (type == 'jpg' || type == 'jpeg') {
		return true;
	} else {
		obj.focus();
		return false;
	}
}
//-->