function changeOption(el) {
		var tmp = el.value
		
		if(tmp == "184") {
			document.getElementById("s1").style.display = "";
			document.getElementById("s2").style.display = "none";
			document.getElementById("s3").style.display = "none";
		}
		
		if(tmp == "182") {
			document.getElementById("s1").style.display = "none";
			document.getElementById("s2").style.display = "";
			document.getElementById("s3").style.display = "none";
		}
		if(tmp == "183") {
			document.getElementById("s1").style.display = "none";
			document.getElementById("s2").style.display = "none";
			document.getElementById("s3").style.display = "";
		}
		
	}