function showNav(idname)   
{
	document.getElementById(idname).style.backgroundPosition  =  "0px -14px";
}

function hideNav(idname)   
{
	document.getElementById(idname).style.backgroundPosition  =  "0px 0px";
}


function showTxt(idname)

{
	document.getElementById(idname).style.display  = "block";
}

function hideTxt(idname)

{
	document.getElementById(idname).style.display  = "none";
}