//予め画像を読み込む関数
function preloadImages(strImageName, strUrl){
	document.images[strImageName] = new Image();
	document.images[strImageName].src = strUrl;
}

//画像読み込みの実行
preloadImages('imgNum1','./images/globalmenu_btn1_2.jpg') ;
preloadImages('imgNum2','./images/globalmenu_btn2_2.jpg') ;
preloadImages('imgNum3','./images/globalmenu_btn3_2.jpg') ;
preloadImages('imgNum4','./images/globalmenu_btn4_2.jpg') ;
preloadImages('imgNum5','./images/globalmenu_btn5_2.jpg') ;
preloadImages('imgNum6','./images/globalsub_btn1_2.jpg') ;
preloadImages('imgNum7','./images/globalsub_btn2_2.jpg') ;
preloadImages('imgNum8','./images/globalsub_btn3_2.jpg') ;
preloadImages('imgNum9','./images/globalsub_btn4_2.jpg') ;
preloadImages('imgNum10','./images/globalsub_btn5_2.jpg') ;
preloadImages('imgNum11','./images/example_lobtn1_2.jpg') ;
preloadImages('imgNum12','./images/example_lobtn2_2.jpg') ;
preloadImages('imgNum13','./images/example_lobtn3_2.jpg') ;
preloadImages('imgNum14','./images/example_lobtn4_2.jpg') ;
preloadImages('imgNum15','./images/example_lobtn5_2.jpg') ;
preloadImages('imgNum16','./images/header_btn2.jpg') ;
preloadImages('imgNum17','./images/totop_btn2.jpg') ;