var DOM = (document.getElementById) ? 1 : 0;
var NS4 = (document.layers) ? 1 : 0;
var IE4 = (document.all) ? 1 : 0;

function s(e){ //use if initial state is hide
	if(DOM) {element = document.getElementById(e).style;} else if (NS4) {element = document.layers[e];} else {element = document.all[e].style;}
	element.display == 'block' ? element.display = 'none' : element.display='block';
}
function h(e){ //use if initial state is show
	if(DOM) {element = document.getElementById(e).style;} else if (NS4) {element = document.layers[e];} else {element = document.all[e].style;}
	element.display == 'none' ? element.display = 'block' : element.display='none';
}