Programación Goibela

function moveUp(selectId) {
	var selectList = document.getElementById(selectId);
	var selectOptions = selectList.getElementsByTagName('option');
	for (var i = 1; i < selectOptions.length; i++) {
		var opt = selectOptions[i];
		if (opt.selected) {
			selectList.removeChild(opt);
			selectList.insertBefore(opt, selectOptions[i - 1]);
		}
       }
}
 
function moveDown(selectId) {
	var selectList = document.getElementById(selectId);
	var selectOptions = selectList.getElementsByTagName('option');
	for (var i = selectOptions.length - 2; i >= 0; i--) {
		var opt = selectOptions[i];
		if (opt.selected) {
		   var nextOpt = selectOptions[i + 1];
		   opt = selectList.removeChild(opt);
		   nextOpt = selectList.replaceChild(opt, nextOpt);
		   selectList.insertBefore(nextOpt, opt);
		}
       }
}
function swapElement(fromList,toList){
    var selectOptions = document.getElementById(fromList);
    for (var i = 0; i < selectOptions.length; i++) {
        var opt = selectOptions[i];
        if (opt.selected) {
            document.getElementById(fromList).removeChild(opt);
            document.getElementById(toList).appendChild(opt);
            i--;
        }
    }
}
function selectAllOptions(selStr)
{
    var selObj = document.getElementById(selStr);
    for (var i=0; i