function deleteOption(object,index) {
    object.options[index] = null;
}

function addOption(object,text,value) {
    var defaultSelected = true;
    var selected = true;
    var optionName = new Option(text, value, defaultSelected, selected)
    object.options[object.length] = optionName;
}

function copySelected(fromObject,toObject,doit) {
	var t = new Array();
    	for (var i=0, l=fromObject.options.length;i<l;i++) {
    	    if (fromObject.options[i].selected){
    	        addOption(toObject,fromObject.options[i].text,fromObject.options[i].value);
				t[t.length]=i;
    		}
    	}
	for(var i=0;i<t.length;i++){
		deleteOption(fromObject,t[i]);
	}
	UnSelectAll(fromObject)
	UnSelectAll(toObject)
}

function UnSelectAll(fromObject) {
    for (var i=0, l=fromObject.options.length;i<l;i++) {
        fromObject.options[i].text,fromObject.options[i].selected = false;
    }
}

function SelectAll(fromObject) {
    for (var i=0, l=fromObject.options.length;i<l;i++) {
        fromObject.options[i].text,fromObject.options[i].selected = true;
    }
}

function sortSelect(obj) {
	var o = new Array();
	if (obj.options==null) { return; }
	for (var i=0; i<obj.options.length; i++) {
		o[o.length] = new Option( obj.options[i].text, obj.options[i].value, obj.options[i].defaultSelected, obj.options[i].selected) ;
		}
	if (o.length==0) { return; }
	o = o.sort( 
		function(a,b) { 
			if ((a.text+"") < (b.text+"")) { return -1; }
			if ((a.text+"") > (b.text+"")) { return 1; }
			return 0;
			} 
		);
	for (var i=0; i<o.length; i++) {
		obj.options[i] = new Option(o[i].text, o[i].value, o[i].defaultSelected, o[i].selected);
	}
}