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);


var htWin=0;

function showWindow(URLStr, w, h) {
	var sw=750; var sh=400;	
	if (self.innerWidth) { sw = self.innerWidth; sh = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientWidth) { sw = document.documentElement.clientWidth; sh = document.documentElement.clientHeight;
	} else if (document.body) { sw = document.body.clientWidth; sh = document.body.clientHeight;
	}
	sw=parseInt(sw); sh=parseInt(sh);
	if (w == null) { w = sw * .7; } 
	if (h == null) { h = sh * .7; }	
	var l = (sw/2) - w/2;
	var t = (sh/2) - h/2;	
	if(htWin) { if(!htWin.closed) htWin.close(); }	
	htWin = open(URLStr, 'htWin', 'toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=no,width='+w+',height='+h+',left='+l+',top='+t+',screenX='+l+',screenY='+t+'');
}

function checkKeyCode(e, keyToCheck){
	var iKeyCode = 0;
	if (window.event) {		
		iKeyCode = window.event.keyCode;//ie
	} else if (e) {		
		iKeyCode = e.which;//nn
	}	
	return (iKeyCode == keyToCheck);	
}

function trapReturn(e){
	var s;
	if (window.event) {		
		s = e.srcElement;//ie
	} else if (e) {		
		s = e.target;//nn
	}	
	if ( checkKeyCode(e, 13) ){
		return (s.tagName.toLowerCase() == 'a' || s.type.toLowerCase() == 'submit');
	} else {return true;} 
}

function clickOnReturn(e, buttonToClick){
	if (checkKeyCode(e, 13)){if(buttonToClick){buttonToClick.click();}}
}

function runOnReturn(e, fnc){
		if (checkKeyCode(e, 13)){eval(fnc);};
	}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function toAnchor(x){
	if (window.focus) self.focus();
	this.location.href='#'+x;
}

var state = 'none';
	
function showhide(layer_ref, toggle) {	
	state = (toggle) ? 'block' : 'none';
	if (document.all) { //IS IE 4 or 5 (or 6 beta)
	eval( "document.all." + layer_ref + ".style.display = state");
	}	
	if (document.layers) { //IS NETSCAPE 4 or below
	document.layers[layer_ref].display = state;
	}	
	if (document.getElementById &&!document.all) {
	hza = document.getElementById(layer_ref);
	hza.style.display = state;
	}
}