function commaseparated(field){
	var allfields=field.split(',');
	for (w=0;w<allfields.length;w=w+1) {
		var a="";
		var l=0;
		var s=0;
		var n="";
		l=document.getElementsByName(allfields[w]).length;
		for (s=0;s<l;s=s+1) {
			if (document.getElementsByName(allfields[w])[s].checked){
				if (n!="") n=n+",";
				n=n+document.getElementsByName(allfields[w])[s].value;
			}
		}
		document.getElementsByName("my["+allfields[w]+"]")[0].value=n;
		/*
		alert(n);
		alert("my["+allfields[w]+"]");
		alert(document.getElementsByName("my["+allfields[w]+"]")[0].value);
		*/
	}
}