obr1=new Image();
obr1.src="images/t_ff.gif";
obr2=new Image();
obr2.src="images/t_hh.gif";
obr3=new Image();
obr3.src="images/t_kk.gif";
obr4=new Image();
obr4.src="images/t_mm.gif";
obr5=new Image();
obr5.src="images/t_oo.gif";
obr6=new Image();
obr6.src="images/t_rr.gif";
obr7=new Image();
obr7.src="images/t_ss.gif";
obr8=new Image();
obr8.src="images/t_uu.gif";