function swapfy(strfy){

	if(strfy == "y"){
		btinfo1.style.display = "block";
		btinfo2.style.display = "none";
		btinfo3.style.display = "none";
		btinfo4.style.display = "none";
fyasplab1.className = "bt1";
fyasplab2.className = "bt2";
fyasplab3.className = "bt2";
fyasplab4.className = "bt2";
	}
	if(strfy == "e"){
		btinfo1.style.display = "none";
		btinfo2.style.display = "block";
		btinfo3.style.display = "none";
		btinfo4.style.display = "none";
fyasplab1.className = "bt2";
fyasplab2.className = "bt1";
fyasplab3.className = "bt2";
fyasplab4.className = "bt2";
	}
	if(strfy == "s"){
		btinfo1.style.display = "none";
		btinfo2.style.display = "none";
		btinfo3.style.display = "block";
		btinfo4.style.display = "none";
fyasplab1.className = "bt2";
fyasplab2.className = "bt2";
fyasplab3.className = "bt1";
fyasplab4.className = "bt2";
	}
	if(strfy== "ss"){
		btinfo1.style.display = "none";
		btinfo2.style.display = "none";
		btinfo3.style.display = "none";
		btinfo4.style.display = "block";
fyasplab1.className = "bt2";
fyasplab2.className = "bt2";
fyasplab3.className = "bt2";
fyasplab4.className = "bt1";
	}
}