function mark_all(form_nr)
{
	 var checkbox = document.forms[form_nr].markall;
	 if (checkbox == "undefined" || checkbox == null)
	 {
		if ((form_nr + 1) < document.forms.length)
		 	checkbox = document.forms[form_nr + 1].markall;
	 }
	  	 
	 var setcheck = checkbox.checked;
     form = document.forms[form_nr];
      for (i=0; i < form.elements.length; i++)
      {
         if ((form.elements[i].type == "checkbox") 
		 	&& (form.elements[i].name != "markall")
			&&(form.elements[i].name != "checkview")
			&&(form.elements[i].name != "markcontrast"))
         {
               form.elements[i].checked = setcheck;
         }
      }
}

function mark_contrast(form_nr)
{
      form = document.forms[form_nr];
      for (i=0; i < form.elements.length; i++)
      {
         if ((form.elements[i].type == "checkbox") 
		 	&& (form.elements[i].name != "markall")
			&&(form.elements[i].name != "checkview")
			&&(form.elements[i].name != "markcontrast"))
         {
            if (form.elements[i].checked == true)
            {
               form.elements[i].checked = false;
            } else {
               form.elements[i].checked = true;
            }
         }
      }
}

function setOperation(operation){
	if (operation == "delete" || operation =="clearall") 
	{
		question = confirm('是否确定要删除?')
		if (question != "0"){
			document.frmAnnounce.operation.value = operation;
			document.frmAnnounce.submit();
		}
	}
	else
	{
		document.frmAnnounce.operation.value = operation;
		document.frmAnnounce.submit();
		
	}
}

function addhtmlSubmit(form_nr)
{
	  var cando = false;
	  form = document.forms[form_nr];
      for (i=0; i < form.elements.length; i++)
      {
         if ((form.elements[i].type == "checkbox") 
		 	&& (form.elements[i].name == "nodeId"))
         {
		 	
            if (form.elements[i].checked == true)
            {
				cando = true;
            } 
         }
		 
		 if (form.elements[i].name == "title")
		 {
		  	if (form.elements[i].value=="")
			{
			  	window.alert("主题没有填写");
				cando = false;
				return;
			}
		  }
      }
	 if (cando== true)
			 form.submit();
	 else window.alert("分类没有选择");
	 
}

function setContent(content){
	document.frmAnnounce.Content.value = content;
}

function DoTitle(addTitle) { 
	var revisedTitle; 
	var currentTitle = document.frmAnnounce.title.value; 
	revisedTitle = currentTitle+addTitle; 
	document.frmAnnounce.title.value=revisedTitle; 
	document.frmAnnounce.title.focus(); 
	return; 
}