function clickIE()
{
	if (document.all)
	{
	return false;
	}
}

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

if (document.layers)
{
	document.captureEvents(Event.MOUSEDOWN);
	document.onmousedown=clickNS;
} 
else
{
	document.onmouseup=clickNS;
	document.oncontextmenu=clickIE;
}

document.oncontextmenu=new Function("return false")