if (document.images) { 
 Image1off = new Image();
 Image1off.src = "images/quienesoff.gif";
 Image2off = new Image();
 Image2off.src = "images/serviciosoff.gif";
 Image3off = new Image();
 Image3off.src = "images/profesionalesoff.gif";
 Image4off = new Image();
 Image4off.src = "images/onlineoff.gif";
 Image5off = new Image();
 Image5off.src = "images/clientesoff.gif";
 Image6off = new Image();
 Image6off.src = "images/enlacesoff.gif";
 Image7off = new Image();
 Image7off.src = "images/articulosoff.gif";
 Image8off = new Image();
 Image8off.src = "images/contactaroff.gif";


 Image1on = new Image();
 Image1on.src = "images/quieneson.gif";
 Image2on = new Image();
 Image2on.src = "images/servicioson.gif";
 Image3on = new Image();
 Image3on.src = "images/profesionaleson.gif";
 Image4on = new Image();
 Image4on.src = "images/onlineon.gif";
 Image5on = new Image();
 Image5on.src = "images/clienteson.gif";
 Image6on = new Image();
 Image6on.src = "images/enlaceson.gif";
 Image7on = new Image();
 Image7on.src = "images/articuloson.gif";
 Image8on = new Image();
 Image8on.src = "images/contactaron.gif";
}

function turnOn(imageName) { 
	if (document.images) { 
	document[imageName].src = eval(imageName + "on.src"); 
	}
}

function turnOff(imageName) { 
	if (document.images) {
	 document[imageName].src = eval(imageName + "off.src"); 
	}
}