var img12  = new Image();
	var img12r = new Image();
	var img13  = new Image();
	var img13r = new Image();
	var img14  = new Image();
	var img14r = new Image();
	var img15  = new Image();
	var img15r = new Image();
	var img16  = new Image();
	var img16r = new Image();


	img12.src  = "./img_sys/ind_08a.jpg"; 
	img12r.src = "./img_sys/ind_08b.jpg"; 
	img13.src  = "./img_sys/ind_12a.jpg"; 
	img13r.src = "./img_sys/ind_12b.jpg"; 
	img14.src  = "./img_sys/ind_13a.jpg"; 
	img14r.src = "./img_sys/ind_13b.jpg"; 
	img15.src  = "./img_sys/ind_14a.jpg"; 
	img15r.src = "./img_sys/ind_14b.jpg"; 
	img16.src  = "./img_sys/ind_04a.jpg"; 
	img16r.src = "./img_sys/ind_04b.jpg"; 


	function chimg12(){
	document.con12.src=img12.src;
	}
	function chimg12r(){
	document.con12.src=img12r.src;
	}

	function chimg13(){
	document.con13.src=img13.src;
	}
	function chimg13r(){
	document.con13.src=img13r.src;
	}

	function chimg14(){
	document.con14.src=img14.src;
	}
	function chimg14r(){
	document.con14.src=img14r.src;
	}

	function chimg15(){
	document.con15.src=img15.src;
	}
	function chimg15r(){
	document.con15.src=img15r.src;
	}

	function chimg16(){
	document.con16.src=img16.src;
	}
	function chimg16r(){
	document.con16.src=img16r.src;
	}