/**
 * --------------------------------------------------------------------------- *
 * Dateiname               : scroller.js
 * --------------------------------------------------------------------------- *
 * Copyright               : Jobware Online-Service GmbH
 *
 * Zur Zeit bearbeitet von : 
 * --------------------------------------------------------------------------- *
 * Bemerkungen:
 * --------------------------------------------------------------------------- *
 */

// Variablen initialisieren
var ScrollerHandle_IE = ""; // Handle fuer den IE
var ScrollerHandle_NC = ""; // Handle fuer den Netscape
var Scroller_Browser_IE = ""; // Ist der Browser ein IE (automatisch)
var Scroller_Browser_NC6 = ""; // Ist der Browser ein Netscape (automatisch)
var Scroller_Browser_NC = ""; // Ist der Browser ein Netscape (automatisch)
var ScrollerImages = ""; // Bilder die gescrollt werden
var ScrollerWidth = 0; // Breite des Scrollers
var T_ScrollerWidth = 0; // Temporaere Breite des Scrollers
var ScrollerHeight = 0; // Hoehe des Scrollers
var ScrollerSpeed = 0; // Geschwindigkeit langsam (1) ...-> schnell (10)
var T_ScrollerSpeed = 0; // Temporaere Geschwindigkeit des Scrollers
var Stop_ScrollerSpeed = 0; // Temporaere Geschwindigkeit des Scrollers
var ScrollerBGColor = "#ffffff"; // Hintergrundfarbe des Scrollers
var ScrollerStopOnMouseOver = 1; // Stoppen, wenn man mit der Mouse drauf geht

// Browser-Erkennung
function getScrollerBrowser()
{
	Scroller_Browser_IE = (document.all || document.getElementById);
	Scroller_Browser_NC6 = ((navigator.userAgent.toLowerCase()).indexOf("gecko") != -1);
	Scroller_Browser_NC = document.layers;
}

// Plaziert den Image-Scroller in der HTML-Seite
function placeScroller(_ScrollerImages, _ScrollerWidth, _ScrollerHeight, 
					   _ScrollerSpeed, _ScrollerBGColor, _ScrollerStopOnMouseOver)
{
	// Bildfolge vervollstaendigen
	ScrollerImages = ScrollerImages + "<nobr>";
	ScrollerImages = ScrollerImages + _ScrollerImages;
	ScrollerImages = ScrollerImages + "</nobr>";				

	// Einstellungen zuweisen
	ScrollerWidth = _ScrollerWidth;
	ScrollerHeight = _ScrollerHeight;
	ScrollerSpeed = _ScrollerSpeed;
	ScrollerBGColor = _ScrollerBGColor;
	ScrollerStopOnMouseOver = _ScrollerStopOnMouseOver;

	// Browsererkennung (IE oder Netscape)
	getScrollerBrowser();

	// Geschwindigkeit setzen
	if (Scroller_Browser_NC6) {
	  ScrollerSpeed = ScrollerSpeed + 1; 
	}
	T_ScrollerSpeed = ScrollerSpeed;
	Stop_ScrollerSpeed = (ScrollerStopOnMouseOver == 0 ? T_ScrollerSpeed : 0);
	
	// Scroller starten beim Starten des Fensters			
	window.onload = initScroller;
	
	// Scroller in abhaengigkeit des Browsers ausgeben				
	if (Scroller_Browser_IE || Scroller_Browser_NC)
	{
		document.write("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">");
		document.write("<tr>");
		document.write("<td>");

		if (Scroller_Browser_NC6) // Internet Explorer
		{
			document.write("<span id=\"scroller_ie_2\" style=\"visibility:hidden;position:absolute;top:0;left:0;\">");
			document.write(ScrollerImages);
			document.write("</span>");

			document.write("<div style=\"position:relative;width:" + ScrollerWidth + ";height:" + ScrollerHeight + ";overflow:hidden;\">");
			document.write("<div style=\"position:relative;width:" + ScrollerWidth + ";height:" + ScrollerHeight + ";background-color:" + ScrollerBGColor + ";\" onMouseover=\"T_ScrollerSpeed=Stop_ScrollerSpeed;\" onMouseout=\"T_ScrollerSpeed=ScrollerSpeed;\">");
			document.write("<div id=\"scroller_ie\" style=\"position:absolute;left:0;top:00\">");
			document.write("</div>");
			document.write("</div>");
			document.write("</div>");
		}
		else if (Scroller_Browser_IE) // Internet Explorer
		{
			document.write("<span id=\"scroller_ie_2\" style=\"visibility:hidden;position:absolute;top:-100;left:-1000\">");
			document.write(ScrollerImages);
			document.write("</span>");

			document.write("<div style=\"position:relative;width:" + ScrollerWidth + ";height:" + ScrollerHeight + ";overflow:hidden\">");
			document.write("<div style=\"position:absolute;width:" + ScrollerWidth + ";height:" + ScrollerHeight + ";background-color:" + ScrollerBGColor + "\" onMouseover=\"T_ScrollerSpeed=Stop_ScrollerSpeed;\" onMouseout=\"T_ScrollerSpeed=ScrollerSpeed;\">");
			document.write("<div id=\"scroller_ie\" style=\"position:absolute;left:0;top:0\">");
			document.write("</div>");
			document.write("</div>");
			document.write("</div>");
		}
		else if (Scroller_Browser_NC) // Netscape
		{
			document.write("<ilayer width=\"" + ScrollerWidth + "\" height=\"" + ScrollerHeight + "\" name=\"scroller_nc\" bgColor=\"" + ScrollerBGColor + "\">");
			document.write("<layer name=\"scroller_nc_2\" left=\"0\" top=\"0\" onMouseover=\"T_ScrollerSpeed=Stop_ScrollerSpeed;\" onMouseout=\"T_ScrollerSpeed=ScrollerSpeed;\">");
			document.write("</layer>");
			document.write("</ilayer>");
		}

		document.write("</td>");
		document.write("</tr>");
		document.write("</table>");
	}
}

// Image-Scroller initialisieren
function initScroller()
{
	var dorun = 0; // darf gescrollt werden
	
	// Je nach Browser den Scroller initialisieren
	if (Scroller_Browser_IE) // Internet Explorer
	{
		ScrollerHandle_IE = (document.getElementById ? document.getElementById("scroller_ie") : document.all.scroller_ie);
		ScrollerHandle_IE.style.left = ScrollerWidth + 8;
		ScrollerHandle_IE.innerHTML = ScrollerImages;
		T_ScrollerWidth = (document.all ? ScrollerHandle_IE.offsetWidth : document.getElementById("scroller_ie_2").offsetWidth);
		
		// Scrollen erlaubt
		dorun = 1;
	}
	else if (Scroller_Browser_NC) // Netscape
	{
		ScrollerHandle_NC = document.scroller_nc.document.scroller_nc_2;
		ScrollerHandle_NC.left = ScrollerWidth + 8;
		ScrollerHandle_NC.document.write(ScrollerImages);
		ScrollerHandle_NC.document.close();
		T_ScrollerWidth = ScrollerHandle_NC.document.width;
		
		// Scrollen erlaubt
		dorun = 1;
	}
	
	// Scrollen	
	if (dorun == 1) { setInterval("doScrolling()", 20); }
}

// Scrollen
function doScrolling()
{
	if (Scroller_Browser_IE)
	{
		if (parseInt(ScrollerHandle_IE.style.left) > (T_ScrollerWidth * (-1) + 8))
		{
			ScrollerHandle_IE.style.left = parseInt(ScrollerHandle_IE.style.left) - T_ScrollerSpeed;
		}					
		else
		{
			ScrollerHandle_IE.style.left = ScrollerWidth + 8;
		}
	}
	else if (Scroller_Browser_NC)
	{
		if (ScrollerHandle_NC.left > (T_ScrollerWidth * (-1) + 8))
		{
			ScrollerHandle_NC.left -= T_ScrollerSpeed;
		}
		else
		{
			ScrollerHandle_NC.left = ScrollerWidth + 8;
		}					
	}
}