var img_path = "images/topnav/"
var extension = ".png"
var topnav_img_map = {
	"our-difference":"our-difference",
	"world-class":"world-class",
	"mangoxan":"mangoxan",
	"seabuck7":"seabuck7",
	"gojizen":"gojizen",
	"ask-dr-mike":"ask-dr-mike",
	"nutrition":"nutrition",
	"events":"events",
	"special-promotions":"special-promotions",
	"retailers":"retailers",
	"order":"order",
}

function nonfilled(base_name) {
	return img_path + base_name + extension;
}

function filled(base_name) {
	return img_path + base_name + "-filled" + extension;
}

function tab_mouse_over(the_object) {
	the_object.src = filled(topnav_img_map[the_object.id]);
}

function tab_mouse_out(the_object) {
	the_object.src = nonfilled(topnav_img_map[the_object.id]);
}