function formValidator(){
	// Make quick references to our fields
	var firstname = document.getElementById('Name');
	var email = document.getElementById('Email');
	var phone= document.getElementById('Phone');
	var msg= document.getElementById('Msg');		
	
	//check empty for data input 
	if(isEmpty(firstname , "Please input your name")){
		return false;
	}
	if(isEmpty(email, "Please input your email address")){
		return false;
	}
	if(isEmpty(phone, "Please input your phone number")){
		return false;
	}
	if(!emailValidator(email, "Please re-type your email address")){
		return false;		
	}
	if(isEmpty(msg, "Please input your message")){
		return false;
	}	
	if(contentValidator(msg)){
		return false;
	}
	return true;	

}
function contentValidator(elem){

	var str=new Array("http","www","[","]","=","url","/","//","#","::");
		
	for(i=0;i<str.length;i++)
	{
		var content=elem.value;
		//alert(content.indexOf(str[i]));		
		if (content.indexOf(str[i])>-1)
		{
			alert("Your conent can not contain these letters: http,www,[,],url,/,//,#,::");
			elem.focus();
			return true;
		}		
	}	
	return false;	
}

function isEmpty(elem, helperMsg){
	if(elem.value.length == 0){
		alert(helperMsg);
		elem.focus(); // set the focus to this input
		return true;
	}
	return false;
}

function isNumeric(elem, helperMsg){
	var numericExpression = /^[0-9]+$/;
	if(elem.value.match(numericExpression)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function isAlphabet(elem, helperMsg){
	var alphaExp = /^[a-zA-Z]+$/;
	if(elem.value.match(alphaExp)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function isAlphanumeric(elem, helperMsg){
	var alphaExp = /^[0-9a-zA-Z]+$/;
	if(elem.value.match(alphaExp)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function lengthRestriction(elem, min, max){
	var uInput = elem.value;
	if(uInput.length >= min && uInput.length <= max){
		return true;
	}else{
		alert("Please enter between " +min+ " and " +max+ " characters");
		elem.focus();
		return false;
	}
}

function madeSelection(elem, helperMsg){
	if(elem.value == ""){
		alert(helperMsg);
		elem.focus();
		return false;
	}else{
		return true;
	}
}

function emailValidator(elem, helperMsg){
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailExp)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}


/***********************************************
* AnyLink Vertical Menu- © Dynamic Drive (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/



//Contents for menu 1, and so on
var menu1=new Array()
menu1[0]='<a href="causes.htm">CAUSES</a>'
menu1[1]='<a href="symptoms.htm">SYMPTOMS</a>'
menu1[2]='<a href="diagnosis.htm">DIAGNOSIS</a>'
menu1[3]='<a href="treatment.htm">TREATMENT</a>'
menu1[4]='<a href="prevention.htm">PREVENTION</a>'
menu1[5]='<a href="copingskills.htm">COPING SKILLS</a>'


//Contents for menu 2
var menu2=new Array()
menu2[0]='<a href="http://www.curehandpain.com/pages/muscle/muscle_pain.php">Muscle Pain</a>'
menu2[1]='<a href="http://www.curehandpain.com/pages/neck/neck_pain.php">Neck Pain</a>'
menu2[2]='<a href="http://www.curehandpain.com/pages/back/back_pain.php">Back Pain</a>'
menu2[3]='<a href="http://www.curehandpain.com/pages/shoulder/shoulder_pain.php">Shoulder Pain</a>'
menu2[4]='<a href="http://www.curehandpain.com/pages/elbow/lateral.php">Elbow Pain</a>'
menu2[5]='<a href="http://www.curehandpain.com/pages/tendon/tendon_pain.php">Tendons Pain </a>'
menu2[6]='<a href="http://www.curehandpain.com/pages/bone/bone.php">Bones Pain</a>'
menu2[7]='<a href="http://www.curehandpain.com/pages/joints/joints.php">Joints Pain</a>'
menu2[8]='<a href="http://www.curehandpain.com/pages/knee/knee.php">Knee Pain</a>'
menu2[9]='<a href="http://www.curehandpain.com/pages/info/info.php">Others </a>'
		
var disappeardelay=250  //menu disappear speed onMouseout (in miliseconds)
var horizontaloffset=2 //horizontal offset of menu from default location. (0-5 is a good value)

/////No further editting needed

var ie4=document.all
var ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="dropmenudiv" style="visibility:hidden;width: 160px" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}


function showhide(obj, e, visible, hidden, menuwidth){
if (ie4||ns6)
dropmenuobj.style.left=dropmenuobj.style.top=-500
dropmenuobj.widthobj=dropmenuobj.style
dropmenuobj.widthobj.width=menuwidth
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
obj.visibility=visible
else if (e.type=="click")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x-obj.offsetWidth < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure+obj.offsetWidth
}
else{
var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move menu up?
edgeoffset=dropmenuobj.contentmeasure-obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either? (position at top of viewable window then)
edgeoffset=dropmenuobj.y
}
}
return edgeoffset
}

function populatemenu(what){
if (ie4||ns6)
dropmenuobj.innerHTML=what.join("")
}


function dropdownmenu(obj, e, menucontents, menuwidth){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
clearhidemenu()
dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
populatemenu(menucontents)

if (ie4||ns6){
showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+obj.offsetWidth+horizontaloffset+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+"px"
}

return clickreturnvalue()
}

function clickreturnvalue(){
if (ie4||ns6) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e){
if (typeof dropmenuobj!="undefined"){
if (ie4||ns6)
dropmenuobj.style.visibility="hidden"
}
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}