var pnn=(document.layers)?true:false;
var pn6=(navigator.vendor == ("Netscape6") || navigator.product == ("Gecko"));
var pie=false;
var pop=false;
if (document.all){ if (navigator.userAgent.search('Opera')>=0){ pie=false; pop=true;} else {pie=true; pop=false;}}
var myWidth = 0, myHeight = 0;
var ekran_x = 0;
var ekran_y = 0;
var przycisk = 0;
var dd_left = 350;
var dd_top = 100;
var on_dd = false;
var dd_x = 0;
var dd_y = 0;
var e = window.event;
	

	
	
		
	function zdarzenia()
	{
	
		if( !document.getElementById('fotoShow')) {
			return;
		}
	document.onmousemove = ruch_myszki;
	document.onmousedown = klik_myszki;
	document.onmouseup = unklik_myszki;
	
	
	if (pnn) document.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP | Event.MOUSEMOVE);
	}

function klik_myszki(e)
	{
	
	if (pnn || pn6) { przycisk = e.which; } else if (pie || pop) { przycisk = event.button; }
	dd_wspolrzedne('fotoShow');

	if( (przycisk==1 && ekran_x>dd_left && ekran_x<dd_left+430 && ekran_y>dd_top && ekran_y<dd_top+310) || pop )
		{

		dd_x = ekran_x-dd_left;
		dd_y = ekran_y-dd_top;
		on_dd = true;
		}
	aktualizuj_str();
	}

function unklik_myszki(e)
	{
	przycisk = 0;
	on_dd = false;
	aktualizuj_str();
	}

function ruch_myszki(e)
	{
	

		
	
	if (pnn || pn6)
		{
		ekran_x = e.pageX;
		ekran_y = e.pageY;
		} else
	if (pie)
		{
		ekran_x = event.clientX + document.body.scrollLeft;
		ekran_y = event.clientY + document.body.scrollTop;
		} else
	if (pop)
		{
		ekran_x = event.clientX;
		ekran_y = event.clientY;
		}
	if (on_dd) { przesun_do('fotoShow', ekran_x - dd_x, ekran_y - dd_y); }
	aktualizuj_str();
	return false;
	}

function dd_wspolrzedne(warstwa)
	{

	if(pnn)
		{
		dd_left=document.layers[warstwa].left;
		dd_top=document.layers[warstwa].top;
		} else
	if(pie || pop)
		{
		dd_left=document.all[warstwa].offsetLeft;
		dd_top=document.all[warstwa].offsetTop;
		} else
	if(pn6)
		{
		dd_left=document.getElementById(warstwa).offsetLeft;
		dd_top=document.getElementById(warstwa).offsetTop;
		}
	}

function przesun_do(warstwa, wspx, wspy)
	{
	
	if ( wspx < 0 ) {
		wspx = 0;
	}
	if ( wspy < 0 ) {
		wspy = 0;
	}
	
	if ( wspx > (myWidth-440) ) {
		wspx = myWidth-440;
	}
	if ( wspy > (myHeight-310) ) {
		wspy = myHeight-310;
	}
	
	if(pnn)
		{
		document.layers[warstwa].left=wspx;
		document.layers[warstwa].top=wspy;
		} else
	if(pie || pop)
		{
		document.all[warstwa].style.left=wspx;
		document.all[warstwa].style.top=wspy;
		} else
	if(pn6)
		{
		document.getElementById(warstwa).style.left=wspx;
		document.getElementById(warstwa).style.top=wspy;
		}
	}

	function WindowSize() {
		  
		  if( typeof( window.innerWidth ) == 'number' ) {
			//Non-IE
			myWidth = window.innerWidth;
			myHeight = window.innerHeight;
		  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
			//IE 6+ in 'standards compliant mode'
			myWidth = document.documentElement.clientWidth;
			myHeight = document.documentElement.clientHeight;
		  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
			//IE 4 compatible
			myWidth = document.body.clientWidth;
			myHeight = document.body.clientHeight;
		  }
		
	}
	
	
function aktualizuj_str()
	{
	dd_wspolrzedne('fotoShow');
	WindowSize();

	}