function navOn(carry)
{document[carry].src="images/nav/"+carry+"_on.gif"}

function navOff(carry)
{document[carry].src="images/nav/"+carry+"_off.gif";}

function bottomnavOn(carry)
{document[carry].src="images/bottomnav/"+carry+"_on.gif"}

function bottomnavOff(carry)
{document[carry].src="images/bottomnav/"+carry+"_off.gif";}