// VERIFICADOR
var dom = document.getElementById ? true:false;
var nn4 = document.layers ? true:false;
var ie4 = document.all ? true:false;

function ver(x){
	ocultar();
	if (dom) {
		if (document.getElementById('caja'+x)) {
			document.getElementById('caja'+x).style.visibility="visible";
			document.getElementById('texto'+x).style.visibility="visible";
		}
	} else if (ie4) {
		if (document.all['caja'+x]) {
			document.all['caja'+x].style.visibility="visible";
			document.all['texto'+x].style.visibility="visible";
		}
	}
	else if (nn4) {
		if (document.layers['caja'+x]) {
			document.layers['caja'+x].visibility="visible";
			document.layers['texto'+x].visibility="visible";
		}
	}
}

function ocultar(){
	if (dom) {
		for (var i=1; i<5; i++) {
			if (document.getElementById('caja'+i)) {
				document.getElementById('caja'+i).style.visibility="hidden";
				document.getElementById('texto'+i).style.visibility="hidden";
			}
		}
	} else if(ie4) {
		for (var i=1; i<5; i++) {
			if (document.all['caja'+i]) {
				document.all['caja'+i].style.visibility="hidden";
				document.all['texto'+i].style.visibility="hidden";
			}
		}
	} else if(nn4) {
		for (var i=1; i<5; i++) {
			if (document.layers['caja'+i]) {
				document.layers['caja'+i].visibility="hidden";
				document.layers['texto'+i].visibility="hidden";
			}
		}
	}
}