var present = 1;
	function toggleNext()
	{
		presentBut = "BUT" + present;
		if(present == 18)
		{
		present = 0;
		}
		next = present + 1;
		nextBut = "BUT" + next;
		toggleBox(nextBut,1);
		toggleBox(presentBut,0);
		present++;
	}
	function togglePrev()
	{
		presentBut = "BUT" + present;
		if(present == 1)
		{
		present = 19;
		}
		prev = present - 1;
		prevBut = "BUT" + prev;
		toggleBox(prevBut,1);
		toggleBox(presentBut,0);
		present--;
	}
	function toggleBox(sDivID, iState) // 1 visible, 0 hidden
	{
		if(document.layers)	   //NN4+
		{
		   document.layers[sDivID].display = iState ? "block" : "none";
		}
		else if(document.getElementById)	  //gecko(NN6) + IE 5+
		{
			var obj = document.getElementById(sDivID);
			obj.style.display = iState ? "block" : "none";
		}
		else if(document.all)	// IE 4
		{
			document.all[sDivID].style.visibility = iState ? "block" : "none";
		}
	}
	
	
	
	var presentD = 1;
	function toggleNextD()
	{
		presentBut = "HEAD" + presentD;
		presentBut1 = "BOX" + presentD;
		if(presentD == 6)
		{
		presentD = 0;
		}
		next = presentD + 1;
		nextBut = "HEAD" + next;
		nextBut1 = "BOX" + next;
		toggleBoxD(nextBut,nextBut1,1);
		toggleBoxD(presentBut,presentBut1,0);
		presentD++;
	}
	function togglePrevD()
	{
		presentBut = "HEAD" + presentD;
		presentBut1 = "BOX" + presentD;
		if(presentD == 1)
		{
		presentD = 7;
		}
		prev = presentD - 1;
		prevBut = "HEAD" + prev;
		prevBut1 = "BOX" + prev;
		toggleBoxD(prevBut,prevBut1,1);
		toggleBoxD(presentBut,presentBut1,0);
		presentD--;
	}
	
	
	
	var presentD1 = 1;
	function toggleNextD1()
	{
		presentBut = "HEAD1" + presentD1;
		presentBut1 = "BOX1" + presentD1;
		if(presentD1 == 4)
		{
		presentD1 = 0;
		}
		next = presentD1 + 1;
		nextBut = "HEAD1" + next;
		nextBut1 = "BOX1" + next;
		toggleBoxD(nextBut,nextBut1,1);
		toggleBoxD(presentBut,presentBut1,0);
		presentD1++;
	}
	function togglePrevD1()
	{
		presentBut = "HEAD1" + presentD1;
		presentBut1 = "BOX1" + presentD1;
		if(presentD1 == 1)
		{
		presentD1 = 5;
		}
		prev = presentD1 - 1;
		prevBut = "HEAD1" + prev;
		prevBut1 = "BOX1" + prev;
		toggleBoxD(prevBut,prevBut1,1);
		toggleBoxD(presentBut,presentBut1,0);
		presentD1--;
	}
	
	
	
	var presentD2 = 1;
	function toggleNextD2()
	{
		presentBut = "HEAD2" + presentD2;
		presentBut1 = "BOX2" + presentD2;
		if(presentD2 == 4)
		{
		presentD2 = 0;
		}
		next = presentD2 + 1;
		nextBut = "HEAD2" + next;
		nextBut1 = "BOX2" + next;
		toggleBoxD(nextBut,nextBut1,1);
		toggleBoxD(presentBut,presentBut1,0);
		presentD2++;
	}
	function togglePrevD2()
	{
		presentBut = "HEAD2" + presentD2;
		presentBut1 = "BOX2" + presentD2;
		if(presentD2 == 1)
		{
		presentD2 = 5;
		}
		prev = presentD2 - 1;
		prevBut = "HEAD2" + prev;
		prevBut1 = "BOX2" + prev;
		toggleBoxD(prevBut,prevBut1,1);
		toggleBoxD(presentBut,presentBut1,0);
		presentD2--;
	}
	
	
	function toggleBoxD(sDivID, hDivID, iState) // 1 visible, 0 hidden
	{
		if(document.layers)	   //NN4+
		{
		   document.layers[sDivID].display = iState ? "block" : "none";
		   document.layers[hDivID].display = iState ? "block" : "none";
		}
		else if(document.getElementById)	  //gecko(NN6) + IE 5+
		{
			var obj = document.getElementById(sDivID);
			obj.style.display = iState ? "block" : "none";
			var obj1 = document.getElementById(hDivID);
			obj1.style.display = iState ? "block" : "none";
		}
		else if(document.all)	// IE 4
		{
			document.all[sDivID].style.visibility = iState ? "block" : "none";
			document.all[hDivID].style.visibility = iState ? "block" : "none";
		}
	}