function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeimages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeimages.arguments.length; i+=2) {
			document[changeimages.arguments[i]].src = changeimages.arguments[i+1];
		}
	}
}


function mover(name) {
    document.getElementById(name+'-img').src = 'images/'+name+'-over.gif';
    document.getElementById(name+'-bullet').style.visibility = 'visible';
    document.getElementById(name+'-txt').style.color = '#768eab';
}
function mout(name) {
    document.getElementById(name+'-img').src = 'images/'+name+'.gif';
    document.getElementById(name+'-bullet').style.visibility = 'hidden';
    document.getElementById(name+'-txt').style.color = '#444';
}

var preloadFlag = false;