function window.document.ondragstart() {
	var oUnknown = window.event.srcElement;
	if (oUnknown.tagName == 'IMG')
	{
		window.event.returnValue = false;
	}
}

function window.document.oncontextmenu()
{
	oUnknown = window.event.srcElement;
	if (oUnknown != null)
	{
		if (oUnknown.type == 'text' || oUnknown.type == 'textarea' || oUnknown.type == 'password')
		{
			return true;
		}else{
			return false;
		}
	}else{
		return false;
	}
}

function window.document.onkeydown()
{
	if ((event.keyCode==116) || (event.ctrlKey && event.keyCode==82))
	{
		event.keyCode=0;
		event.returnValue=false;
	}

	if ((event.keyCode == 8))
	{
		oUnknown = window.event.srcElement;
		if (oUnknown != null)
		{
			if (oUnknown.type == 'text' || oUnknown.type == 'textarea' || oUnknown.type == 'password')
			{
				event.returnValue = true;
			}else{
				event.returnValue = false;
			}
		}else{
			event.returnValue = false;
		}
	}
}