function naviconout(navimgnum){
if (navimgnum==1) document.nav1.src="images/m1.jpg";
else if (navimgnum==2) document.nav2.src="images/m2.jpg";
else if (navimgnum==3) document.nav3.src="images/m3.jpg";
else if (navimgnum==4) document.nav4.src="images/m4.jpg";
else if (navimgnum==5) document.nav5.src="images/m5.jpg";
else if (navimgnum==6) document.nav6.src="images/m6.jpg";
else if (navimgnum==7) document.nav7.src="images/m7.jpg";
else if (navimgnum==8) document.nav8.src="images/m8.jpg";
}

function naviconovr(navimgnum){
if (navimgnum==1) document.nav1.src="images/m11.jpg";
else if (navimgnum==2) document.nav2.src="images/m21.jpg";
else if (navimgnum==3) document.nav3.src="images/m31.jpg";
else if (navimgnum==4) document.nav4.src="images/m41.jpg";
else if (navimgnum==5) document.nav5.src="images/m51.jpg";
else if (navimgnum==6) document.nav6.src="images/m61.jpg";
else if (navimgnum==7) document.nav7.src="images/m71.jpg";
else if (navimgnum==8) document.nav8.src="images/m81.jpg";
}