function returnEventFalse()
{
	event.returnValue = false;
}

function returnEventTrue()
{
	event.returnValue = true;
}

var HostName = location.host;

switch(HostName)
{
case "www.4science.net" :
	document.oncontextmenu = returnEventFalse;
	document.ondragstart = returnEventFalse;
	document.onselectstart = returnEventFalse;
	break;

case "dev.4science.net" :
	document.oncontextmenu = returnEventFalse;
	document.ondragstart = returnEventFalse;
	document.onselectstart = returnEventFalse;
	break;

default :
	document.oncontextmenu = returnEventTrue;
	document.ondragstart = returnEventTrue;
	document.onselectstart = returnEventTrue;
	break;
}