function preloadImages() {
  preImg=new Array();
  for(i=0;i<preloadImages.arguments.length;i++){
    preImg[i]=new Image()
    preImg[i].src=preloadImages.arguments[i]
  }
}
preloadImages('/shukugawa_new/_common/img/arrow.gif',
			  '/shukugawa_new/_common/img/list_bg.gif','/shukugawa_new/_common/img/list_bg_d.gif',
			  '/shukugawa_new/_common/img/pageup.gif','/shukugawa_new/_common/img/pageup_d.gif',
			  '/shukugawa_new/_common/img_menu/campus.gif','/shukugawa_new/_common/img_menu/campus_d.gif',
			  '/shukugawa_new/_common/img_menu/college.gif','/shukugawa_new/_common/img_menu/college_d.gif',
			  '/shukugawa_new/_common/img_menu/course.gif','/shukugawa_new/_common/img_menu/course_d.gif',
			  '/shukugawa_new/_common/img_menu/employment.gif','/shukugawa_new/_common/img_menu/employment_d.gif',
			  '/shukugawa_new/_common/img_menu/exam.gif','/shukugawa_new/_common/img_menu/exam_d.gif',
			  '/shukugawa_new/_common/img_menu/home.gif','/shukugawa_new/_common/img_menu/home_d.gif',
			  '/shukugawa_new/_common/img_menu/overseas.gif','/shukugawa_new/_common/img_menu/overseas_d.gif',
			  '/shukugawa_new/_common/img_menu/access.gif','/shukugawa_new/_common/img_menu/access_d.gif',
			  '/shukugawa_new/_common/img_menu/mail.gif','/shukugawa_new/_common/img_menu/mail_d.gif',
			  '/shukugawa_new/_common/img_menu/sitemap.gif','/shukugawa_new/_common/img_menu/sitemap_d.gif'
			  );