function isEmail (strEmail)
{
    var emailReg = /^[_a-z0-9]+@([_a-z0-9]+\.)+[a-z0-9]{2,5}$/i; 
    if(emailReg.test(strEmail)) return true; 
    return false; 
}

function isNumberic (strNumber)
{
    var numReg = /[0-9]{1,}/;
    if(numReg.test(strNumber)) return true; 
    return false; 
}
function $() {
  var elements = new Array();
  
  for ( var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1) 
      return element;
      
    elements.push(element);
  }
  
  return elements;
}
function swap(s,a,b,c){$(s)[a]=$(s)[a]==b?c:b;}
function hide(s){$(s).style.display=$(s).style.display=="none"?"":"none";}

//comments
function saveComment ( theForm )
{
	var verifycode  = theForm.verifycode.value ;
	var content     = theForm.content.value ;
<!-- IF [logined] == false -->
 var loginname   = theForm.loginname.value ;
	var password    = theForm.password.value ;
	var anonymous   = theForm.anonymous.checked == true ? 1 : 0 ;
	if (loginname=='')
	{
	    alert('请填写帐号或匿名昵称！');
		return false;
	}
	if ( anonymous==0 && password=='')
	{
	    alert('通行证用户请填写密码！');
		return false;
	}
<!-- ENDIF -->
	if (verifycode=='')
	{
	    alert('请填写图片验证码！');
		return false;
	}
	if (content=='')
	{
	    alert('请填写留言内容！');
		return false;
	}
	return true ;
}
function showpollresult(ptid)
{
    //window.showModalDialog ("../contents.php?pollresult=1&ptid=" + ptid , window , "dialogwidth:480px;dialogheight:480px;toolbar:no;scrollbars:yes;status:no;resizable:yes;location:no;menubar:no;help:no;"); 
	window.open ("../contents.php?pollresult=1&ptid=" + ptid , "pollrltwin", "height=300, width=480, toolbar=no, scrollbars=yes, resizable=no, status=no, location=no, menubar=no,"); 
}