//#sons of suckerfish dropdowns
//#credit: http://www.htmldog.com/articles/suckerfish/dropdowns/
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);

//#facilities section popups
//#returns false if all went ok so that href attribute of anchor will not fire
function popup(url,width,height)
{
	width = typeof(width) != 'undefined' ? width : 540;
  	height = typeof(height) != 'undefined' ? height : 400;
	//check url was supplied and that it contains a file extension
	if(url != null && url.indexOf('.') != -1)
	{
		//position window centrally if possible
		var left = (800 - width)/2;
		var top = (600 - height)/2;
		if(screen) 
		{		
			top = (screen.availHeight - height)/2;
			left = (screen.availWidth - width)/2;
		}
		//name window filename without extension e.g. map
		var winName = url.substr(url.lastIndexOf(".")-1,1);
		var winOptions = "status=false,scrollbars=1,width="+width+",height="+height+",screenX="+left+",screenY="+top+",left="+left+",top="+top;
		window.open(url,winName,winOptions);
		return false;
	 }
	 else
	 {
		return true;  
	 }
}

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_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}

//attach multiple events to onload
//simonwillison.net
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}