function image_change(image,mod)
{
	loadImg = new Image();
	loadImg.src = "img/start/"+image+"_"+mod+".png";
	
	document.getElementById(image).src = loadImg.src;
}

function image_change_navi(image,mod)
{
	loadImg = new Image();
	loadImg.src = "img/navi/"+image+"_"+mod+".png";
	
	document.getElementById(image).src = loadImg.src;
}