function showLAYER(layName){
	if(document.all)document.all(layName).style.visibility='visible'
	else if(document.getElementById) {document.getElementById(layName).style.visibility ='visible'}
	else if(document.layers)document.layers[layName].visibility='show' 
	}
function hideLAYER(layName){
	if(document.all)document.all(layName).style.visibility='hidden'
	else if(document.getElementById) {document.getElementById(layName).style.visibility ='hidden'}
	else if(document.layers)document.layers[layName].visibility='hide' 
	}