function photoboxNextImage(){
	var catchImageChangerDiv = document.getElementById( 'inner-catch-photo-box' );
	var pictureArray = catchImageChangerDiv.getElementsByTagName( 'div' );
	
	var i = 0;
	for( i; i<pictureArray.length; i++ )
	{
		var singlePicDiv = pictureArray[i];
				
		if( singlePicDiv.style.display == 'block' )
		{
			singlePicDiv.style.display = 'none';	

			i++;
			var nextSinglePicDiv = ( i == pictureArray.length ) ? pictureArray[0] : pictureArray[i];

			nextSinglePicDiv.style.display = 'block';	
			return;
		}
	}	
}

function photoboxPreviousImage(){
	var catchImageChangerDiv = document.getElementById( 'inner-catch-photo-box' );
	var pictureArray = catchImageChangerDiv.getElementsByTagName( 'div' );
	
	var i = pictureArray.length - 1;
	for( i; i >= 0; i-- )
	{
		var singlePicDiv = pictureArray[i];

		if( singlePicDiv.style.display == 'block' )
		{
			singlePicDiv.style.display = 'none';

			i--;
			var previousSinglePicDiv = ( i == -1 ) ? pictureArray[ pictureArray.length - 1 ] : pictureArray[i];
			
			previousSinglePicDiv.style.display = 'block';			
			return;
		}
	}	
}