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 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];}}
}

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);

//Checks if the supplied fields are empty and highlights field in red if so
function ContactFormValidation (sFieldIDs) {
   var i;
   var arrFields = sFieldIDs.split(":");
   var currField;
   var bSubmitForm = true;
   var email= /^[\w-\.]+\@[\w\.-]+\.[a-zA-Z]{2,4}$/;
   
   for (i = 0; i < arrFields.length; i++) {
      // Get form field reference
      currField = document.getElementById(arrFields[i]);
      
      // Check for null in the case of a non existing html element
      if (currField != null) {      
         // Set fields style to default
         SetBorderStyle(currField, "default");
         
         // If field is empty then set the style to red background and border
         if (currField.name.toLowerCase() == "email" && (!(email.test(currField.value)))) {
            SetBorderStyle(currField, "error");
            bSubmitForm = false;
         }
         else if (currField.value == "") {
            SetBorderStyle(currField, "error");
            bSubmitForm = false;
         }
      }
   }
   return bSubmitForm;
}
function SetBorderStyle(fldFormField, fDefaultOrError){
   if (fDefaultOrError.toLowerCase() == "error") {
      borderstyle = "1px solid #ea172a";
      bgcolorstyle = "#ffc0c0";
   }
   else if (fDefaultOrError.toLowerCase() == "default") {
      borderstyle = "1px solid #969696";
      bgcolorstyle = "#FFFFFF";
   }
   
   fldFormField.style.border = borderstyle;
   fldFormField.style.background = bgcolorstyle;
}