function navigateDirect(direction, unique)
	{
		var imageCollection = document.getElementsByTagName("IMG");
		var imgArr = new Array();
		var idx =0;
		var first = true;
		for(var i=0;i<imageCollection.length;i++)
		{
			if(imageCollection[i].id.indexOf('image_'+unique)==0)
			{
				imgArr.push(imageCollection[i]);
			}
		}
		
		for(var i=0;i<imgArr.length;i++)
		{
			if(imgArr[i].style.display=='' && first)
			{
				idx=i;
				first= false;
			}
		}
		
		if(direction=='up')
		{
			idx++;
		}
		else if(direction=='down' && idx>0)
		{
			idx--;
		}
		for(var i=0;i<imgArr.length;i++)
		{
			if(i>=idx && i<idx+4)
			{
				imgArr[i].style.display="";
			}
			else
			{
				imgArr[i].style.display="none";
			}
		}
		
		var up=document.getElementById('up'+unique)
		if((idx+5)<imgArr.length)
		{
			up.disabled = false;
		}
		else
		{
			up.disabled = true;
		}

		var down=document.getElementById('down'+unique)
		if(down)
		{
			if(idx>0)
			{
				down.disabled = false;
			}
			else
				down.disabled = true;
		}
	}
	
	
	function navigatePage(direction, unique)
	{
		var imageCollection = document.getElementsByTagName("IMG");
		var imgArr = new Array();
		var idx =0;
		var first = true;

		for(var i=0;i<imageCollection.length;i++)
		{
			if(imageCollection[i].id.indexOf('image_'+unique)==0)
			{
				imgArr.push(imageCollection[i]);
			}
		}
		
		for(var i=0;i<imgArr.length;i++)
		{
			if(imgArr[i].style.display=='' && first)
			{
				idx=i;
				first= false;
			}
		}
		var len = imgArr.length;
		
		if(direction=='up')
		{
			idx++;
		}
		else if(direction=='down' && idx>0)
		{
			idx--;
		}
		if((idx+4)>len)return;
		
		for(var i=0;i<imgArr.length;i++)
		{
			if(i>=idx && i<idx+4)
			{
				imgArr[i].style.display="";
			}
			else
			{
				imgArr[i].style.display="none";
			}
		}

		var paq = document.getElementById('PaginInfo'+unique);if(paq)paq.innerHTML = 'Viewing images '+(idx+1)+'-'+(idx+4)+' of '+len;

	}