MaChat - a chat with a browser for LANs

// This script was created by Michael Mac and can be used as a freeware
var m_arMessages = new Array(0);
var m_nCurMsg = 0;
var m_strNoMoreMsg = "";
function AddMessage( strTitle, strText )
{
	// Create a new bigger array
	var array = new Array( m_arMessages.length + 2 );
	
	// Copy the old messages
	for( i=0; i<m_arMessages.length; i++ )
		array[i] = m_arMessages[i];
	
	// Add a new message at the end
	array[array.length-2] = strTitle;
	array[array.length-1] = strText;
			
	m_arMessages = array;
}
		
function Remove( nPos )
{
	// Create a new smaller array
	var array = new Array( m_arMessages.length - 2 );

	var nAddIndex=0;
	// Copy  messages
	for( i=0; i<m_arMessages.length; i++ )
	{
		if ( i == (nPos*2) || i == (nPos*2+1) )
			continue;
		
		array[nAddIndex] = m_arMessages[i];
		nAddIndex++;
	}
			
	m_arMessages = array;
						
	if ( m_nCurMsg >=1  )
	{
		m_nCurMsg--;
		ShowMsg( m_nCurMsg );
	}
	else
		ShowMsg( m_nCurMsg );
}
		
function ShowMsg( nMsg )
{
	if ( m_arMessages.length == 0 )
	{
		// Disable back, next and remove buttons
		document.getElementById( "back" ).style.visibility = "hidden";
		document.getElementById( "next" ).style.visibility = "hidden";
		document.getElementById( "remove" ).style.visibility = "hidden";

		// Show appropriate message
		text.innerHTML = m_strNoMoreMsg;
		title.innerHTML = m_strNoMoreMsg;
		info.innerHTML = "0/0";
		show();
		return;
	}
			
	m_nCurMsg = nMsg;
	title.innerHTML = m_arMessages[nMsg*2];
	text.innerHTML = m_arMessages[nMsg*2 + 1];
	show();
			
	// Enable or disable buttons
	if ( nMsg == 0 )
		document.getElementById( "back" ).style.visibility = "hidden";
	else
		document.getElementById( "back" ).style.visibility = "visible";
	
	if ( nMsg >= ( m_arMessages.length / 2 ) - 1 )
		document.getElementById( "next" ).style.visibility = "hidden";
	else
		document.getElementById( "next" ).style.visibility = "visible";
				
	// Set info
	info.innerHTML = ( m_nCurMsg + 1 ) + "/" + ( m_arMessages.length / 2 );
}
		
function Back()
{
	m_nCurMsg--;
	ShowMsg( m_nCurMsg );
}
		
function Next()
{
	m_nCurMsg++;
	ShowMsg( m_nCurMsg );
}

function SetNoMoreMsgString( strText )
{
	m_strNoMoreMsg = strText;
}

// This part of the script is a modification of the orginal one which you can download from www.dynamicdrive.com

var bouncelimit = 32;

function show()
{	
	// Start
	crossobj = document.getElementById( "msg" ).style;
	crossobj.left = 45;
	scroll_top = document.body.scrollTop;
	crossobj.top = scroll_top - 250;
	crossobj.visibility = "visible";
	dropstart = setInterval( "dropin()", 50 );
}

function dropin()
{
	scroll_top = document.body.scrollTop;
	if ( parseInt( crossobj.top ) < 100 + scroll_top )
		crossobj.top = parseInt( crossobj.top ) + 40;
	else
	{
		clearInterval( dropstart );
		bouncestart = setInterval( "bouncein()" , 50) ;
	}
}

function bouncein()
{
	crossobj.top = parseInt( crossobj.top ) - bouncelimit;
	if ( bouncelimit < 0 )
		bouncelimit += 8;
	bouncelimit = bouncelimit * -1;
	if ( bouncelimit == 0 )
		clearInterval( bouncestart );
}

function dismissbox()
{
	if ( window.bouncestart )
		clearInterval( bouncestart );
		
	bouncelimit = 32; //(must be divisible by 8)
	crossobj.visibility = "hidden";
	clearInterval( dropstart );
	clearInterval( bouncestart );
}