if (document.images) {
	cta_01_over = newImage("images/cta_01_over.jpeg");
	cta_02_over = newImage("images/cta_02_over.jpeg");
	cta_03_over = newImage("images/cta_03_over.jpeg");	
}

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


function over(imgName) {
  if (document.images) 
    document[imgName].src = eval(imgName + '_over.src')
}

function out(imgName) {
  if (document.images)
    document[imgName].src = 'images/' + imgName + '.jpeg'
}