topPicOpacity = 100;
topPicOpacityDir = 0;
picToSwitch = 4;
picIndex = 1;

picSwapStep = 1;
picSwapTime = 150;
picSwapWait = 650;

function startSwapImage() {
	picIndex ++;
	if (picIndex == (picToSwitch + 1)) { picIndex = 1; }
	//alert ("poszlo:" + picIndex);
	if(document.getElementById){ 

		if (topPicOpacityDir == 1) {
			bi = document.getElementById('mainPic');
			bi.src = "graphics/main/"+(picIndex)+".jpg";
		} else {
			bi = document.getElementById('mainPicDiv');
			bi.style.backgroundImage = "url('graphics/main/"+(picIndex)+".jpg')";
			bi.style.backgroundRepeat = "no-repeat";
		}

	}
	setTimeout("startSwapping()", picSwapWait);
}

function startSwapImage2() {
	picIndex ++;
	if (picIndex == (picToSwitch + 1)) { picIndex = 1; }
	//alert ("poszlo:" + picIndex);
	if(document.getElementById){ 

		if (topPicOpacityDir == 1) {
			bi = document.getElementById('mainPic2');
			bi.src = "graphics/main/nowe/"+(picIndex)+".jpg";
		} else {
			bi = document.getElementById('mainPicDiv2');
			bi.style.backgroundImage = "url('graphics/main/nowe/"+(picIndex)+".jpg')";
			bi.style.backgroundRepeat = "no-repeat";
		}

	}
	setTimeout("startSwapping2()", picSwapWait);
}

function startSwapping() {
	
	if(document.getElementById('mainPic')){
        
        mp = document.getElementById('mainPic');

    	if ((topPicOpacityDir == 0)) {
    		topPicOpacity = topPicOpacity - picSwapStep;
    		if (topPicOpacity <= 0) {
    			topPicOpacity = 0;
    			topPicOpacityDir = 1;
    			setTimeout("startSwapImage()", picSwapWait);
    		} else {
    			setTimeout("startSwapping()", picSwapTime);
    		}
    	} else {
    		topPicOpacity = topPicOpacity + picSwapStep;
    		if (topPicOpacity >= 100) {
    			topPicOpacity = 100;
    			topPicOpacityDir = 0;
    			setTimeout("startSwapImage()", picSwapWait);
    		} else {
    			setTimeout("startSwapping()", picSwapTime);
    		}
    	}
	
	
		switch (window.browser) {
			case "Microsoft Internet Explorer":
	        		mp.style.filter="alpha(opacity="+topPicOpacity+")";
				//mp.filters.alpha.opacity = topPicOpacity;
				break;
			case "Netscape":
					mp.style.MozOpacity = topPicOpacity/100;
				break;
			case "Opera":
			default:
				if (topPicOpacity > 50) {
					mp.style.visibility = 'visible';
				} else {
					mp.style.visibility = 'hidden';
				}
				break;
		}
	
	


	}
}

function startSwapping2() {
	
	if(document.getElementById('mainPic2')){
        
        mp = document.getElementById('mainPic2');

    	if ((topPicOpacityDir == 0)) {
    		topPicOpacity = topPicOpacity - picSwapStep;
    		if (topPicOpacity <= 0) {
    			topPicOpacity = 0;
    			topPicOpacityDir = 1;
    			setTimeout("startSwapImage2()", picSwapWait);
    		} else {
    			setTimeout("startSwapping2()", picSwapTime);
    		}
    	} else {
    		topPicOpacity = topPicOpacity + picSwapStep;
    		if (topPicOpacity >= 100) {
    			topPicOpacity = 100;
    			topPicOpacityDir = 0;
    			setTimeout("startSwapImage2()", picSwapWait);
    		} else {
    			setTimeout("startSwapping2()", picSwapTime);
    		}
    	}
	
	
		switch (window.browser) {
			case "Microsoft Internet Explorer":
	        		mp.style.filter="alpha(opacity="+topPicOpacity+")";
				//mp.filters.alpha.opacity = topPicOpacity;
				break;
			case "Netscape":
					mp.style.MozOpacity = topPicOpacity/100;
				break;
			case "Opera":
			default:
				if (topPicOpacity > 50) {
					mp.style.visibility = 'visible';
				} else {
					mp.style.visibility = 'hidden';
				}
				break;
		}
	
	


	}
}

function hideBanner(a) {
	try {
		document.getElementById("closeBanner" + a).style.display = "none";
		document.getElementById("bannerID" + a).style.display = "none";
		document.getElementById("bannerArrowID" + a).style.display = "none";
	} catch (hB) { 
		//alert ("got exception" + hB); 
	}
}