function s(str1){

	if(str1 == "a"){
		d_a.style.display = "block";
		d_b.style.display = "none";
		d_c.style.display = "none";
		d_d.style.display = "none";
		d_e.style.display = "none";
		d_f.style.display = "none";
		d_g.style.display = "none";
		d_h.style.display = "none";
	}
	if(str1 == "b"){
		d_b.style.display = "block";
		d_a.style.display = "none";
		d_c.style.display = "none";
		d_d.style.display = "none";
		d_e.style.display = "none";
		d_f.style.display = "none";
		d_g.style.display = "none";
		d_h.style.display = "none";
	}
	if(str1 == "c"){
		d_c.style.display = "block";
		d_b.style.display = "none";
		d_a.style.display = "none";
		d_d.style.display = "none";
		d_e.style.display = "none";
		d_f.style.display = "none";
		d_g.style.display = "none";
		d_h.style.display = "none";
	}
	if(str1 == "d"){
		d_d.style.display = "block";
		d_b.style.display = "none";
		d_c.style.display = "none";
		d_a.style.display = "none";
		d_e.style.display = "none";
		d_f.style.display = "none";
		d_g.style.display = "none";
		d_h.style.display = "none";
	}
	if(str1 == "e"){
		d_e.style.display = "block";
		d_b.style.display = "none";
		d_c.style.display = "none";
		d_d.style.display = "none";
		d_a.style.display = "none";
		d_f.style.display = "none";
		d_g.style.display = "none";
		d_h.style.display = "none";
	}
		if(str1 == "f"){
		d_f.style.display = "block";
		d_b.style.display = "none";
		d_c.style.display = "none";
		d_d.style.display = "none";
		d_e.style.display = "none";
		d_a.style.display = "none";
		d_g.style.display = "none";
		d_h.style.display = "none";
	}
			if(str1 == "g"){
		d_g.style.display = "block";
		d_b.style.display = "none";
		d_c.style.display = "none";
		d_d.style.display = "none";
		d_e.style.display = "none";
		d_f.style.display = "none";
		d_a.style.display = "none";
		d_h.style.display = "none";
		
	}
	if(str1 == "h"){
		d_h.style.display = "block";
		d_g.style.display = "none";
		d_b.style.display = "none";
		d_c.style.display = "none";
		d_d.style.display = "none";
		d_e.style.display = "none";
		d_f.style.display = "none";
		d_a.style.display = "none";
		
	}

}