function calcHeight()
{
  //find the height of the internal page
  var the_height=
    document.getElementById('main').contentWindow.
      document.body.scrollHeight;

  //change the height of the iframe
  document.getElementById('main').height=
      the_height;
}


var message = "no right click!";
function clickIE()
{	
	if (event.button==2) 
	{		
		alert(message);		
		return false;	
	}
}


function clickNS(e)
{	
	if (document.layers||document.getElementById&&!document.all) 
	{		
		if (e.which==2||e.which==3) 
		{	
			alert(message);			
			return false;		
		}	
	}
}

if (document.layers) 
{	
	document.captureEvents(Event.MOUSEDOWN);	
	document.onmousedown=clickNS;
} 
else if (document.all&&!document.getElementById) 	
{	
	document.onmousedown=clickIE;
}

document.oncontextmenu=new Function("alert(message);return false")