function swap(f1,f2) {
	var t = document.getElementById(f1).value;
	document.getElementById(f1).value = document.getElementById(f2).value;
	document.getElementById(f2).value = t;
}
function swapdown(i1) {
	var down = i1+1;
	swap("field"+i1, "field"+down);
}
function swapup(i1) {
	var up = i1-1;
	swap("field"+i1, "field"+up);	
}