var i=0;

function nextimg() 
	{
		if (i<stillimg.length-1) {
			i++;
			document.still.src=stillimg[i];	
			var number = i+1;
			$("span.num").replaceWith("<span class='num'>"+number+"</span>");
		}
		else if (i==stillimg.length-1) {
			document.still.src=stillimg[0];
			i=0;
			var number = i+1;
			$("span.num").replaceWith("<span class='num'>"+number+"</span>");
		}
	}

function previmg()
	{
		if (i==0) {
			i=stillimg.length-1;
			document.still.src=stillimg[i];	
			var number = i+1;
			$("span.num").replaceWith("<span class='num'>"+number+"</span>");
				
		}		
		else if (i<=stillimg.length-1) {
			i--;
			document.still.src=stillimg[i];	
			var number = i+1;
			$("span.num").replaceWith("<span class='num'>"+number+"</span>");
		}
	}