if (document.images) {
	var about1 = new Image();
	about1.src = "images/top_03_3.jpg";
	var about2 = new Image();
	about2.src = "images/top_03_3_over.jpg";
	var comb1 = new Image();
	comb1.src = "images/top_04_4.jpg";
	var comb2 = new Image();
	comb2.src = "images/top_04_4_over.jpg";
	var pcomb1 = new Image();
	pcomb1.src = "images/top_05_5.jpg";
	var pcomb2 = new Image();
	pcomb2.src = "images/top_05_5_over.jpg";
	var energy1 = new Image();
	energy1.src = "images/top_08_8.jpg";
	var energy2 = new Image();
	energy2.src = "images/top_08_8_over.jpg";
	var engser1 = new Image();
	engser1.src = "images/top_09_9.jpg";
	var engser2 = new Image();
	engser2.src = "images/top_09_9_over.jpg";
	var list1 = new Image();
	list1.src = "images/top_10_10.jpg";
	var list2 = new Image();
	list2.src = "images/top_10_10_over.jpg";
	var down1 = new Image();
	down1.src = "images/top_13_13.jpg";
	var down2 = new Image();
	down2.src = "images/top_13_13_over.jpg";
	var cont1 = new Image();
	cont1.src = "images/top_14_14.jpg";
	var cont2 = new Image();
	cont2.src = "images/top_14_14_over.jpg";
}

function act(imgName) {
	if (document.images)
		document.images[imgName].src = eval(imgName + "2.src");
}

function inact(imgName) {
	if (document.images)
		document.images[imgName].src = eval(imgName + "1.src");
}