function del(val){
//		alert('debug5');
    selectTo=document.getElementById(val);
    clearLength=selectTo.options.length;
		while (clearLength--) selectTo.options[0]=null;
}

function addOption(selectId, txt, val, sel)
{
//		alert ('debug6');
		var objOption = new Option(txt,val, sel, sel);
		document.getElementById(selectId).options.add(objOption);
}