sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);

function windowshade(id){
	div = document.getElementById(id);
	
	if(div.className == 'invis'){
		div.className = '';
	} else {
		div.className = 'invis';
	}
} 

function scaleIt() {
  var v;
  var scalePhotos = document.getElementById("scale-image");
  floorSize = .25;
  ceilingSize = 1.0;
  v = floorSize + (50 * (ceilingSize - floorSize));
  scalePhotos.style.width = (v*190)+'px';
} 

sfRolly = function() {
	var sfRs = document.getElementById("squarenav").getElementsByTagName("A").getElementsByTagName("IMG");
	for (var i=0; i<sfRs.length; i++) {
		sfRs[i].onmouseover=function() {
			this.className+=" invis";
		}
		sfRs[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}