if (document.images) {

m1 = new Image();m1.src = 'img/contact.gif';
m1o = new Image();m1o.src = 'img/contact_on.gif';

m2 = new Image();m2.src = 'img/sitemap.gif';
m2o = new Image();m2o.src = 'img/sitemap_on.gif';

m3 = new Image();m3.src = 'img/japanese.gif';
m3o = new Image();m3o.src = 'img/japanese_on.gif';

m4 = new Image();m4.src = 'img/corporate.gif';
m4o = new Image();m4o.src = 'img/corporate_on.gif';

m5 = new Image();m5.src = 'img/company.gif';
m5o = new Image();m5o.src = 'img/company_on.gif';

m6 = new Image();m6.src = 'img/business.gif';
m6o = new Image();m6o.src = 'img/business_on.gif';

m7 = new Image();m7.src = 'img/map.gif';
m7o = new Image();m7o.src = 'img/map_on.gif';

m8 = new Image();m8.src = 'img/group.gif';
m8o = new Image();m8o.src = 'img/group_on.gif';

m9 = new Image();m9.src = 'img/finance.gif';
m9o = new Image();m9o.src = 'img/finance_on.gif';

m10 = new Image();m10.src = 'img/steel.gif';
m10o = new Image();m10o.src = 'img/steel_on.gif';


m11 = new Image();m11.src = 'img/fuels.gif';
m11o = new Image();m11o.src = 'img/fuels_on.gif';

m12 = new Image();m12.src = 'img/machine.gif';
m12o = new Image();m12o.src = 'img/machine_on.gif';

m13 = new Image();m13.src = 'img/trade.gif';
m13o = new Image();m13o.src = 'img/trade_on.gif';

m14 = new Image();m14.src = 'img/device.gif';
m14o = new Image();m14o.src = 'img/device_on.gif';

m15 = new Image();m15.src = 'img/materials.gif';
m15o = new Image();m15o.src = 'img/materials_on.gif';

m16 = new Image();m16.src = 'img/generation.gif';
m16o = new Image();m16o.src = 'img/generation_on.gif';

}

function di() {
	if (document.images) {
		for (var i=0; i<di.arguments.length; i+=2) {
			document[di.arguments[i]].src = eval(di.arguments[i+1] + ".src");
		}
	}
}