function sdf(mf,vl) {
	for (var i = 0; i <= document.getElementById(mf).length; i++) {
		 if (document.getElementById(mf).options[i].value == vl) { 
			 return i;
			 }
		}
}

function sd(mf,vl) {
	document.getElementById(mf).selectedIndex = sdf(mf,vl);
}