if (document.images) {
	link_01_over = newImage("images/link_01_over.jpg");
	link_02_over = newImage("images/link_02_over.jpg");
	link_03_over = newImage("images/link_03_over.jpg");	
	link_04_over = newImage("images/link_04_over.jpg");	
	talk_back_over = newImage("images/talk_back_over.jpg");
	act_now_over = newImage("images/act_now_over.jpg");
	contribute_over = newImage("images/contribute_over.jpg");
	sec_act_now_over = newImage("images/sec_act_now_over.jpg");
	sec_contribute_over = newImage("images/sec_contribute_over.jpg");
	
}

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 + '.jpg'
}