// JavaScript Document

// scroll sentences

function scroll(message_loop)
{

	var messages = new Array(8);
	messages[0] = "LPdublin.com ";
	messages[1] = "Uma ponte luso-irlandesa.";
	messages[2] = "Um espaço informativo.";
	messages[3] = "Uma plataforma de trabalho.";
	messages[4] = "Um acervo de imagens.";
	messages[5] = "Um universo crítico.";
	messages[6] = "Uma ligação directa ao mundo lusófono.";
	messages[7] = "LPDublin - um site de portas abertas.";


	if(message_loop >= messages.length)
	{
		message_loop = 0;
	}
	var old_value = window.document.scroll_form.banner.value;
	var new_value;
	var random = Math.floor(Math.random() * messages[message_loop].length);
	var change_letter = messages[message_loop].charAt(random);
	if(old_value == messages[message_loop])
		{
			message_loop++;
			setTimeout("scroll("+message_loop+")",4000);
			return;
		}
	if(change_letter == old_value.charAt(random))
		{
			scroll(message_loop);
			return;
		}
	var first_part = old_value.substring(0,random);
	random++;
	var last_part = old_value.substring(random,messages[message_loop].length);
	var new_value = first_part + change_letter + last_part;
	window.document.scroll_form.banner.value = new_value;
	setTimeout("scroll("+message_loop+")",50);
}