first_comic = 1;
newest_comic = 6;
current_comic = 4;

function change_comic(image,new_comic)
{
	if (new_comic < first_comic) { new_comic = first_comic; }
	if (new_comic > newest_comic) { new_comic = newest_comic; }
	
	if (new_comic < 10)
	{
		comic_number = "00"+new_comic;
	}
	else if (new_comic < 100)
	{
		comic_number = "0"+new_comic;
	}
	else 
	{
		comic_number = ""+new_comic;
	}
	
	document.images[image].src = "Comic_"+comic_number+".png";
	current_comic = new_comic;
	
	if (current_comic == newest_comic)
	{
		document.buttons.nextbutton.disabled = true;
		document.buttons.lastbutton.disabled = true;
	}
	else
	{
		document.buttons.nextbutton.disabled = false;
		document.buttons.lastbutton.disabled = false;
	}
	if (current_comic == first_comic)
	{
		document.buttons.firstbutton.disabled = true;
		document.buttons.previousbutton.disabled = true;
	}
	else
	{
		document.buttons.firstbutton.disabled = false;
		document.buttons.previousbutton.disabled = false;
	}

	self.scrollTo(0,0);
}