//<script>
/* 
* browserspecific.js
* Andreas Ipp, June 2002
* andreas.ipp@gmx.at
* http://strange.itp.tuwien.ac.at/~ipp/
*
* Make browser-dependent code transparant
*/

// Global variables

var mousex=0; // current position of mouse
var mousey=0;

var Winx=0; // current Window size
var Winy=0;

var ScrollLeft; // current scroll positions
var ScrollTop;

function start() {
if (ns4)doc.captureEvents(Event.MOUSEMOVE);
//if (ns4) doc.captureEvents(Event.MOUSEDOWN);

doc.onmousemove=posquick;

//doc.onmousedown=mdown
}

//--------------------------------------------
// Select the right mouse trapping function
function posquick(e) {
	var isOpera = (navigator.userAgent.indexOf('Opera') != -1);
	var isIE = (!isOpera && navigator.userAgent.indexOf('MSIE') != -1)
	var posx = 0;
	var posy = 0;
	if (!e) var e = window.event;
	if (e.pageX || e.pageY)
	{
		doc.onmousemove=pq1;
	}
	else if (e.clientX || e.clientY)
	{
		doc.onmousemove=pq2;
		if (isIE)
		{
			doc.onmousemove=pq3;
		}
	}
	// alert(""+doc.onmousemove);
}

// epage for Netscape 
function pq1(e) {
mousex=e.pageX;
mousey=e.pageY;
}

// eclient for Opera
function pq2(e) {
var e = window.event;
mousex=e.clientX;
mousey=e.clientY;
}

// eclient for IE
function pq3(e) {
var e = window.event;
mousex=e.clientX+document.body.scrollLeft;
mousey=e.clientY+document.body.scrollTop;
}

//--------------------------------------------
//Show object
function show(obj) {
   // general function
   if (ie) {
      // Internet explorer ONLY understands "visible"
      // IE will halt on anything else...
      show = showq1;
   }
   else
   {
      // Netscape understands "show"
      // Mozilla 0.9.9 wants "visible";
      // both browsers don't care about each other's setting
      show = showq2;
   }
   show(obj);
}

function showq1(obj) {
obj.style.visibility = "visible";
}

function showq2(obj) {
obj.style.visibility = "show";
obj.style.visibility = "visible";
}

//--------------------------------------------
function hide(obj) {
   // general function
   if (ie) {
      // Internet explorer ONLY understands "hidden"
      // IE will halt on anything else...
      hide = hideq1;
   }
   else
   {
      // Netscape understands "hide"
      // Mozilla 0.9.9 wants "hidden";
      //both browsers don't care about each other's setting
      hide = hideq2;
   }
   hide(obj);
}

function hideq1(obj) {
obj.style.visibility = "hidden";
}

function hideq2(obj) {
obj.style.visibility = "hide";
obj.style.visibility = "hidden";
}

//--------------------------------------------
// does nothing
// but Opera will give an "Internal communication error" upon calling void()
function myvoid() {
}

//--------------------------------------------
function WinSizeNotSupported() {
	alert("This script does not support your browser. Please contact andreas.ipp@gmx.at");
}

//--------------------------------------------
//gets size of available document or Windowsize,
//whichever is bigger.
function getWinSize() {
	getWinSize = WinSizeNotSupported;
	
	if(document.all) {
		// Internet Explorer	
		getWinSize = wsq1;
		
		if (! document.body.scrollWidth) {
			//Operaspecific: Opera in the Internet mode
			// doesn't understand scrollWidth/scrollHeight,
			// but clientWidth gives the scrollWidth... 
			getWinSize = wsq2;
		};

	} 
	else if(document.layers) {
		// Netscape??
		getWinSize = wsq3;
	}
	else if (document.getElementById) {
		
		if (document.height) {
			// Netscape 6 & Mozilla 1
			getWinSize = wsq3;
		}
	
		// For Opera & Opera in Mozilla mode:
		else if (document.body.offsetWidth) {
			getWinSize = wsq5;
		}
		
	}
	//alert(getWinSize);		
	getWinSize();
}

// For IE 6:
function wsq1() {
with(document.body){
Winx = scrollWidth;
Winy = scrollHeight;
if (clientWidth > Winx) Winx = clientWidth;
if (clientHeight > Winy) Winy = clientHeight;
ScrollLeft = scrollLeft;
ScrollTop = scrollTop;
}
}

// For Opera in the IE mode
function wsq2() {
Winx = document.body.clientWidth;
Winy = document.body.clientHeight;
ScrollLeft = document.body.scrollLeft;
ScrollTop = document.body.scrollTop;
}

// For Netscape 6 & Mozilla 1
// Netscape 4.08 (Win)
function wsq3() {
Winx = document.width;
Winy = document.height;
if (window.innerWidth > Winx) Winx = window.innerWidth;
if (window.innerHeight > Winy) Winy = window.innerHeight;
ScrollLeft = window.pageXOffset;
ScrollTop = window.pageYOffset;
}

// Opera as Opera & Opera 6 in Mozilla mode
function wsq5() {
Winx = document.body.offsetWidth;
Winy = document.body.offsetHeight;
if (window.innerWidth > Winx) Winx = window.innerWidth;
if (window.innerHeight > Winy) Winy = window.innerHeight;
ScrollLeft = document.body.scrollLeft;
ScrollTop = document.body.scrollTop;
}

//--------------------------------------------
// returns size of "div" element in divsize.
// divsize must be "= new Object();"
function getObjSize(obj, divsize) {
	if (document.getElementById || document.all) {
		// IE
		// Opera as Opera, IE, Mozilla
		// Netscape 6, Mozilla
		getObjSize = gosq1;
	}
	else
	{
		if (document.layers){
			// Netscape 4.08
			getObjSize = gosq2;
		}
		else
		{
			alert("getObjSize not defined.");
		}
	}
	//alert(getObjSize);
	getObjSize(obj,divsize);
}

function gosq1(obj,ds) {
ds.top = parseInt(obj.style.top);
ds.left = parseInt(obj.style.left);
ds.right = ds.left + parseInt(obj.offsetWidth);
ds.bottom = ds.top + parseInt(obj.offsetHeight);
}

function gosq2(obj,ds) {
ds.top = parseInt(obj.style.top);
ds.left = parseInt(obj.style.left);
ds.right = ds.left + parseInt(obj.clip.width);
ds.bottom = ds.top + parseInt(obj.clip.height);
}

//--------------------------------------------
//</script>