/**
 * @author Andrzej Sobel <andrzej.sobel@pronet.com.pl>
 */

function changeSelectValues(name, keys, values, nullValue, selected)
{
	var form = document.form;
	var el = form[name];
	
	el.options.length = 0;
	el.options[0] = new Option(nullValue, 0);
	
	if(values.length > 0){
		for(i = 0, j = 1; i < values.length; i++){
			if(values[i] != ''){
				if(keys[i] == selected){
					el.options[j++] = new Option(values[i], keys[i], true);
				}else{
					el.options[j++] = new Option(values[i], keys[i]);
				}
			}
		}
	}
	
	el.disabled = false;
}