var isIE;
var isNav;

if (parseInt(navigator.appVersion) >= 4)
{
//alert("Nome: " + navigator.appName + ' Versione:' + navigator.appVersion);
	if (navigator.appName == 'Netscape'){
        // mozilla
                isNav = true;
                layerRef = 'document.getElementById(';
                //styleRef = ').style';
		styleRef = ')';

        }else{
		if (navigator.appName == 'Nav'){
			isNav = true;
			layerRef = 'document.layers[';
			styleRef = ']';

		}else{
			isIE = true;
			//alert("isIE");
			//layerRef = 'document.all[';
			//styleRef = '].style';
			//layerRef = 'document.layers[';
			//styleRef = ']';
			layerRef = '';
			styleRef = '';
		}
	}
	
}

function visualizza(nome_layer,stato){
	//eval(layerRef + '"' + nome_layer + '"' + styleRef + '.style.visibility = "' + stato + '"' );
}

function setLayerProprerty(nome_layer,property,valore){
	//alert(layerRef + '' + nome_layer + '' + styleRef + '.' + property + ' = "' + valore + '"');
	//eval(layerRef + '"' + nome_layer + '"' + styleRef + '.' + property + ' = "' + valore + '"' );
	// div_result_' . $index . '.innerHTML = "' . $div_result . '"
	if ( isIE == true) {
		eval(layerRef + '' + nome_layer + '' + styleRef + '.' + property + ' = "' + valore + '"' );
	}else{
		eval(layerRef + '"' + nome_layer + '"' + styleRef + '.' + property + ' = "' + valore + '"' );
	}
}

function callLayerMethod(nome_layer,method){
	// document.layers[div_checkbox_1].document.open();
	eval(layerRef + '"' + nome_layer + '"' + styleRef + '.' + method );
}