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 isblank(s) {
                for(var i=0; i<s.length; i++) {
                        var c = s.charAt(i);
                        if((c != ' ') && (c != '\n') && (c != '\t')) 
                        {
                                return false;
                        }
                }
                return true;
}

function verify(f) {
                var msg;
                var empty_fields = "";
                var errors = "";
                
                for (var i=0; i<f.length; i++) 
                {
                        var e = f.elements[i];
                        if (((e.type == "text") || (e.type == "textarea")) && !e.optional) 
                        {
                                if ((e.value == null) || (e.value == "") || isblank(e.value)) 
                                {
                                        empty_fields += "\n" + e.name;
                                        continue;
                                }
                                if (e.numeric || (e.min != null) || (e.max != null)) 
                                {
                                        var v = parseFloat(e.value);
                                        if (isNan(v) || ((e.min != null) && (v < e.min)) ||  ((e.max != null) && (v > e.max))) 
                                        {
                                                errors += "- The field " + e.name + " must be a number";
                                                if (e.min != null)
                                                {
                                                        errors += " that is greater than " + e.min;
                                                }
                                                if (e.max != null && e.min != null)
                                                {
                                                        errors += " and less than " + e.max;
                                                }
                                                else if (e.max != null)
                                                {
                                                        errors += " that is less than " + e.max;
                                                }
                                                errors += ".\n";
                                        }
                                }
                        }
                }
				               
               if (!empty_fields && !errors) 
                {
					return true;
                }
                
                msg = "__________________________________\n\n";
                 msg += "Your email can not be sent without all required information. Please review your form and fill in the needed information before submitting.\n";
                msg += "_________________________________\n\n";
                
                if (empty_fields) 
                {                        
                        msg += "- The following required field(s) are empty:" + empty_fields + "\n";
                        if (errors) msg += "\n";
                }

               msg += errors;
                                
               alert(msg);
                return false;
}