//Rollover loadImage
rollover 	= Array(6);
rollover[0] =new Image();rollover[0].src ="../image/nasu_menu01.gif";
rollover[1] =new Image();rollover[1].src ="../image/nasu_menu01b.gif";
rollover[2] =new Image();rollover[2].src ="../image/nasu_menu03.gif";
rollover[3] =new Image();rollover[3].src ="../image/nasu_menu03b.gif";
rollover[4] =new Image();rollover[4].src ="../image/nasu_menu04.gif";
rollover[5] =new Image();rollover[5].src ="../image/nasu_menu04b.gif";
rollover[6] =new Image();rollover[6].src ="../image/nasu_menu02.gif";
rollover[7] =new Image();rollover[7].src ="../image/nasu_menu02b.gif";