// generic preload 

function newImage(arg) {
if (document.images) {
rslt = new Image();
rslt.src = arg;
return rslt;
}
}

function changeImages() {
if (document.images && (preloadFlag == true)) {
for (var i=0; i<changeImages.arguments.length; i+=2) {
document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
}
}
}

var preloadFlag = false;
function preloadImages() {
if (document.images) {
homeo = newImage("/i/homeo.gif");
newso = newImage("/i/newso.gif");
projectso = newImage("/i/projectso.gif");
peopleo = newImage("/i/peopleo.gif");
thinkingo = newImage("/i/thinkingo.gif");
contacto = newImage("/i/contacto.gif");
blurbo = newImage("/i/blurbo.gif");
zeldo = newImage("/i/zelboxo.gif");
alvo = newImage("/i/alboxo.gif");
blurbo016 = newImage("/i/blurbo-16.gif");
blurbo017 = newImage("/i/blurbo-17.gif");
blurbo018 = newImage("/i/blurbo-18.gif");
blurbo019 = newImage("/i/blurbo-19.gif");
preloadFlag = true;
}
}

// toggle visibility 

function toggle( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == "none"){
  				target.style.display = "";
  			} else {
  				target.style.display = "none";
  			}
  	}
}