function getInternetExplorerVersion()
		{
	  var rv = -1; // Return value assumes failure.
	  if (navigator.appName == 'Microsoft Internet Explorer')
	  {
	    var ua = navigator.userAgent;
	    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
	    if (re.exec(ua) != null)
	      rv = parseFloat( RegExp.$1 );
	  }
	  return rv;
	}
	function checkVersion()
	{ 
	  var vers = "IE";
	  var vers1 = "Version";
	  msg = "بالاتری دارید"+vers1+"با " +vers + "برای دیدن این سایت شما نیاز به  ";
	  //var msg = "You're not using Internet Explorer.";
	  var ver = getInternetExplorerVersion();
	
	  if ( ver > -1 )
	  {
	  	
	    if ( ver <= 6.0 ) 
	    	alert( msg );
	      /*msg = "";"You're using a recent copy of Internet Explorer."
	    else
	      msg = "You should upgrade your copy of Internet Explorer.";*/
	  }
	}