String.prototype.trim=trim;
//將前後空白去掉
function trim() {
  return this.replace(/^[\s]+|[\s]+$/g,"");
}

function clearForbidTag(obj) {
  obj.value = obj.value.replace(/<\/?(iframe|script)[^>]*>/gim,"");
}

function chkdata(frm) {
	clearForbidTag(frm.embedCode);
	
	if(frm.title.value.trim().length == 0) {
		alert('請輸入「標題」！');
		setFocus(frm.title);
		return false;
	}
	if(frm.embedCode.value.trim().length == 0) {
		alert('請輸入「嵌入碼」！');
		setFocus(frm.embedCode);
		return false;
	}
	if(frm.randnum.value.length == 0) {
		alert('請輸入「右圖數字」！');
		setFocus(frm.randnum);
		return false;
	}
}

function setFocus(obj) { //firefox,ie
	window.setTimeout( function(){ obj.focus(); }, 0);
}

function toWatch(cvId) {
	var oImg = document.getElementById("imgWatch"+cvId);
	var oDiv = document.getElementById("dvDesc"+cvId);
	var flag = oImg.src.indexOf("watch1.jpg")>-1 ? true : false;
	var oIfrm = document.getElementById('video_frame');
	if (lastOpenId!=null && lastOpenId!=cvId) {
	  var oLastOpen = document.getElementById("dvDesc"+lastOpenId);
	  oLastOpen.style.display = "none";
	  document.getElementById("imgWatch"+lastOpenId).src = "/images/watch1.jpg";
	}
	if (flag) {
	  oImg.src = "/images/watch2.jpg";
	  oImg.title = "關閉會員推薦影音與描述";
	  oDiv.style.display = "";
	  oIfrm.src = "/media/playV2.jsp?cvId="+cvId;
	  lastOpenId = cvId;
	} else {
	  oImg.src = "/images/watch1.jpg";
	  oImg.title = "觀看會員推薦影音與描述";
	  oDiv.style.display = "none";
	  oIfrm.src = videoSrc;
	}
}