abc();

function abc() {
	var objSel = document.search_form.artist;



	if (objSel.value == "-2") {
//		document.getElementById("to_artist").style.visibility = "hidden";
		document.getElementById("to_artist").style.display = "none";
	} else {
		document.getElementById("to_artist").style.display = "";
		for (i=0; i<is.length; i++) {
			if (is[i] == objSel.value) {
				document.getElementById("to_artist").href = as + us[i] + "/";
			}
		}
	}	
}