// JavaScript Document
window.onload = function(){
	MM_preloadImages('/images/how-green.gif','/images/it-works-green.gif','/images/and-you-green.gif','/images/with-us-green.gif','/images/blog-green.gif')
};
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_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_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 hideEmail(_name, _domain, _class) {
	if(_class==null) _class='';
	document.writeln('<a href="mailto:'+_name+'@'+_domain+'" class="'+_class+'">'+_name+'@'+_domain+'</a>');	
}
function addCSS(key,value) {
	document.writeln('<style type="text/css">'+key+'{'+value+'}</style>');
}

function addRemoveClass(id,className){
	domObj = document.getElementById(id);
	currentClass = domObj.className;
	if (currentClass.indexOf(className)<0){
		currentClass = currentClass+" "+className;
		domObj.className = currentClass;
	}else{
		currentClass = currentClass.replace(className, "");
		domObj.className = currentClass;
	}
}

// emailName is the name of the text field
function validateEmail(emailName) {
	var emailObj = MM_findObj(emailName);
	if (window.RegExp) {
		var regstr_1 = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)"; //invalid email
		var regstr_2 = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,4})(\\]?)$"; //valid email
		var reg1 = new RegExp(regstr_1);
		var reg2 = new RegExp(regstr_2);
		if (emailObj.value.length > 0 && !reg1.test(emailObj.value) && reg2.test(emailObj.value)){
			return true;
		}else{
			alert("Please enter a valid email address.");
			emailObj.focus();
			emailObj.select();
			return false;
		}
	}else{
		var p=emailObj.value.indexOf('@'); var z=emailObj.value.indexOf('.');
        if (z<1 || z==(emailObj.value.length-1) || p<1 || p==(emailObj.value.length-1)){
			alert("Please enter a valid email address.");
			emailObj.focus();
			emailObj.select();
			return false;
		}else{
			return true;
		}
	}
}
function checkPhoneNumber(id){
	var field = document.getElementById(id);
	field.value = removeLeadingAndTrailingChar (field.value, " ");
	if(field.value.length==0){
		alert("Please enter a valid phone number.");
		field.select();
		field.focus();
		return false;
	}
	var aField = field.value.split("-");
	if(aField.length<3){
		alert("Please enter a valid phone number.");
		field.select();
		field.focus();
		return false;
	}
	if(aField.length==3 && aField[0].length==3 && aField[1].length==3 && aField[2].length==4){
		return true;
	}else{
		alert("Please enter a valid phone number.");
		field.select();
		field.focus();
		return false;
	}
	
}
function checkZipCode(field,length,displayName){
	var field = MM_findObj(field);
	if(isNaN(field.value)){
		alert("Please enter a valid Zip Code");
		field.select();
		field.focus();
		return false;
	}else{
		if(length<0){
			if(field.value.length > 0){
				return true;
			}else{
				alert("Please enter a valid Zip Code.");
				field.select();
				field.focus();
				return false;	
			}
		}else if(field.value.length != length){
			alert("Please enter a valid Zip Code.");
			field.select();
			field.focus();
			return false;
		}else{
			return true;	
		}
	}
}


function checkFieldLength(field,length,displayName){
	var field = MM_findObj(field);
	field.value = removeLeadingAndTrailingChar (field.value, " ");
	if(field.value.length < length){
		if(length == 1){
			alert("Please make sure "+displayName+" is completed.");
			field.select();
			field.focus();
		}else{
			alert("Please make sure "+displayName+" has at least "+length+" characters.");
			field.select();
			field.focus();
		}
		return false;
	}else{
		return true;
	}
}
function removeLeadingAndTrailingChar (inputString, removeChar){
	var returnString = inputString;
	if (removeChar.length){
		while(''+returnString.charAt(0)==removeChar){
			returnString=returnString.substring(1,returnString.length);
		}
		while(''+returnString.charAt(returnString.length-1)==removeChar){
			returnString=returnString.substring(0,returnString.length-1);
		}
	}
	return returnString;
}

function validateSelectList(selectID,diplayValue){
	var selectObj = MM_findObj(selectID);
	if(-1 == parseInt(selectObj.value)){
		alert("Please select a "+diplayValue+" value.");
		selectObj.focus();
		return false;
	}else{
		return true;
	}
}

function contactCheck(){
	if(
		checkFieldLength('subject',1,'SUBJECT') &&
		checkFieldLength('name',1,'NAME') &&
		validateEmail('email') &&
		checkFieldLength('message',1,'MESSAGE')
	){
		return true;
	}else{
		return false;
	}
}
function birdayCheck(){
	if(
		checkFieldLength('name',1,'NAME') &&
		validateEmail('email') &&
		checkFieldLength('address',1,'ADDRESS')&&
		checkFieldLength('city',1,'CITY')&&
		checkFieldLength('state',1,'STATE')&&
		checkFieldLength('zip',1,'ZIP')&&
		validateSelectList('month','MONTH')&&
		validateSelectList('day','DAY')
	){
		return true;
	}else{
		return false;
	}
}