function mainOn(imgName) 
{	
		document.images[imgName].src =  SITEPREFIX + "/framework/gfx/nav/ind/main/on.gif";
}

function mainOff(imgName) 
{	
		document.images[imgName].src =  SITEPREFIX + "/framework/gfx/nav/ind/main/off.gif";
}

function submenuOn(imgName) 
{	
		document.images[imgName].src =  SITEPREFIX + "/framework/gfx/nav/ind/sub/on.gif";
}

function submenuOff(imgName) 
{	
		document.images[imgName].src =  SITEPREFIX + "/framework/gfx/nav/ind/sub/off.gif";
}