subbu01_on = new Image();
subbu01_on.src = "image/submenu/subbu01_on.gif";
subbu01_off= new Image();
subbu01_off.src= "image/submenu/subbu01_off.gif";

subbu02_on = new Image();
subbu02_on.src = "image/submenu/subbu02_on.gif";
subbu02_off= new Image();
subbu02_off.src= "image/submenu/subbu02_off.gif";

subbu03_on = new Image();
subbu03_on.src = "image/submenu/subbu03_on.gif";
subbu03_off= new Image();
subbu03_off.src= "image/submenu/subbu03_off.gif";

subbu04_on = new Image();
subbu04_on.src = "image/submenu/subbu04_on.gif";
subbu04_off= new Image();
subbu04_off.src= "image/submenu/subbu04_off.gif";

bu_logout_on = new Image();
bu_logout_on.src = "image/menu/bu_logout_on.gif";
bu_logout_off= new Image();
bu_logout_off.src= "image/menu/bu_logout_off.gif";


bu01_on = new Image();
bu01_on.src = "image/menu/bu01_on.gif";
bu01_off= new Image();
bu01_off.src= "image/menu/bu01_off.gif";

bu02_on = new Image();
bu02_on.src = "image/menu/bu02_on.gif";
bu02_off= new Image();
bu02_off.src= "image/menu/bu02_off.gif";

bu03_on = new Image();
bu03_on.src = "image/menu/bu03_on.gif";
bu03_off= new Image();
bu03_off.src= "image/menu/bu03_off.gif";

bu04_on = new Image();
bu04_on.src = "image/menu/bu04_on.gif";
bu04_off= new Image();
bu04_off.src= "image/menu/bu04_off.gif";

bu05_on = new Image();
bu05_on.src = "image/menu/bu05_on.gif";
bu05_off= new Image();
bu05_off.src= "image/menu/bu05_off.gif";



function imgRoll(imgDocID, mouseMov) {
	if ( mouseMov == "in" ) {
		document.images[imgDocID].src = eval(imgDocID + "_on.src");
	}
	if ( mouseMov == "out" ) {
		document.images[imgDocID].src = eval(imgDocID + "_off.src");
	}
}