var myPosition = 0;
	
	// Function to "activate" images.
	function fc_Activate(imgName) {
		var preview = 0;
		// left preview
		preview = myPosition - 1;
		if(preview < 0){
//			document[imgPL].src = "images/blank.gif";
			document['imgPL'].title = 'Letztes Bild';
	    	document['imgPL'].alt = 'Letztes Bild';
		}
		else{
			document['imgPL'].title = myTitle[preview];
	    	document['imgPL'].alt = myTitle[preview];
//			document[imgPL].src = myImages[preview];
		}
		
		// Main Image
//	    fc_sound();
	    document[imgName].src = myImages[myPosition];
	    document[imgName].title = myTitle[myPosition];
	    document[imgName].alt = myTitle[myPosition];
	    
	    // right preview
	    preview = myPosition + 1;
		if(preview < myImages.length){
//	    	document['imgPR'].src = myImages[preview];
			document['imgPR'].title = myTitle[preview];
	    	document['imgPR'].alt = myTitle[preview];
	    }
		else{
			document['imgPR'].title = 'Erstes Bild';
	    	document['imgPR'].alt = 'Erstes Bild';
//			document[imgPR].src = "images/blank.gif";
		}
//	    fc_WriteDesc();
	}
	
	// Function to fill Text
	function fc_WriteDesc() {
		var myCount =  myPosition + 1;
		document.getElementById('myDesc').innerText= myTitle[myPosition];
		
	}


	// function for next image
	function fc_NextImage(){
		if (myPosition < myImages.length -1){
			myPosition++;
			fc_Activate('imgHolder');
		}
		else{
			check = confirm("Möchten Sie von vorne anfangen?");
			if(check){
				// continue show from beginning
				myPosition = 0;
				fc_Activate('imgHolder');
			}
		}
	}
	
	// function for previous image
	function fc_PrevImage(){
		if (myPosition > 0){
			myPosition--;
			fc_Activate('imgHolder');
		}
		else{
			check = confirm("Möchten Sie vom letzten Bild weitermachen?");
			if(check){
				// continue show from beginning
				myPosition = myImages.length -1;
				fc_Activate('imgHolder');
			}
		}
	}