function proswitch(t1, t2, t3, t4, t5, t6, t7, t8, b1, b2, b3, b4, b5, b6, b7, b8) {
	t1.style.display = "block";
	t2.style.display = "none"; 
	t3.style.display = "none"; 
	t4.style.display = "none"; 
	t5.style.display = "none";
	t6.style.display = "none"; 
	t7.style.display = "none"; 
	t8.style.display = "none"; 
	b1.className="pro-button-select";
	b2.className="pro-button"; 
	b3.className="pro-button";
	b4.className="pro-button";
	b5.className="pro-button";
	b6.className="pro-button"; 
	b7.className="pro-button";
	b8.className="pro-button";
}