function ebook_start()
{
	if(screen.availWidth==1024)
	{
		window.open(startDir+"/VIEW.HTM"+location.search,"ebook","fullscreen");
	}
	else
	{
		left1=(screen.availWidth-1024-5)/2;
		top1=(screen.availHeight-768-10)/2;
		window.open(startDir+"/VIEW.HTM"+location.search,"ebook","toolbar=no location=no directories=no status=no menubar=no scrollbars=no resizable=no width=1024 height=768 top="+top1+" left="+left1);	
		
	}
}

function keyEventHandle()
{
	if (( event.ctrlKey == true && (event.keyCode == 78 || event.keycode == 82 )) || (event.keyCode >= 112 && event.keyCode <= 123))
	{
		event.keyCode	= 0;
		event.cancelBubble	= true;
		event.returnValue	= false;
	}
}
document.onkeydown = keyEventHandle;
document.onkeyup = keyEventHandle;

document.oncontextmenu = function() { return false;}
document.onselectstart = function() {return false;}