function showMyLayer(passedlayer)
{
layername=passedlayer;
if(document.layers){document.layers[layername].display='block';}
if(document.all){document.all[layername].style.display='block';}
if(!document.all && document.getElementById){document.getElementById(layername).style.display='block';}
}

function hideMyLayer(passedlayer)
{
layername=passedlayer;
if(document.layers){document.layers[layername].display='none';}
if(document.all){document.all[layername].style.display='none';}
if(!document.all && document.getElementById){document.getElementById(layername).style.display='none';}
}