if (document.images) {
	//ranking
	setImgObj('ra1_off','/rsrc/image/market/ranking/ra1_off.gif');
	setImgObj('ra1_on','/rsrc/image/market/ranking/ra1_on.gif');
	setImgObj('ra2_off','/rsrc/image/market/ranking/ra2_off.gif');
	setImgObj('ra2_on','/rsrc/image/market/ranking/ra2_on.gif');
	setImgObj('ra3_off','/rsrc/image/market/ranking/ra3_off.gif');
	setImgObj('ra3_on','/rsrc/image/market/ranking/ra3_on.gif');
	setImgObj('ra4_off','/rsrc/image/market/ranking/ra4_off.gif');
	setImgObj('ra4_on','/rsrc/image/market/ranking/ra4_on.gif');
	setImgObj('ra5_off','/rsrc/image/market/ranking/ra5_off.gif');
	setImgObj('ra5_on','/rsrc/image/market/ranking/ra5_on.gif');
}