function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

window.onload=function() {
	MM_preloadImages(
		'/images/common/menuHome.png',
		'/images/common/menuCompany.png',
		'/images/common/menuService.png',
		'/images/common/menuEco.png',
		'/images/common/menuContact.png',

		'/images/common/menuHomeMO.png',
		'/images/common/menuCompanyMO.png',
		'/images/common/menuServiceMO.png',
		'/images/common/menuEcoMO.png',
		'/images/common/menuContactMO.png',

		'/images/common/menuHomeActive.png',
		'/images/common/menuCompanyActive.png',
		'/images/common/menuServiceActive.png',
		'/images/common/menuEcoActive.png',
		'/images/common/menuContactActive.png'
	);
}