function inValidCharSet(str,charset)
{
	// Note: doesn't use regular expressions to avoid early Mac browser bugs
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0)
		{
			return false
			break
		}
	return true
}

function allDigits(str)
{
	return inValidCharSet(str,"0123456789.");
}
 
function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}

function ValidateNewsletter(){
	var fname=document.newsletter.name
	var lname=document.newsletter.lname
	var emailID=document.newsletter.email
	var interest=document.newsletter.interest
	if ((fname.value==null)||(fname.value=="")){
		alert("Please Enter your First Name")
		fname.focus()
		return false
	}
	if ((lname.value==null)||(lname.value=="")){
		alert("Please Enter your Last Name")
		lname.focus()
		return false
	}
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	else if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }
 
 function ValidateNewsletter2(){
	var name=document.newsletter2.Name	
	var emailID=document.newsletter2.Email
	if ((name.value==null)||(name.value=="")){
		alert("Please Enter your Name")
		name.focus()
		return false
	}
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	else if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }
 
 function ValidateFormContact(){
 	var name=document.form1.name
	var lname=document.form1.lname
	var email=document.form1.email
	var org=document.form1.org
	var phone=document.form1.phone
	var comment=document.form1.comment
	
	if ((name.value==null)||(name.value=="")){
		alert("Please Enter your First Name")
		name.focus()
		return false
	}
	
	if ((lname.value==null)||(lname.value=="")){
		alert("Please Enter your Last Name")
		lname.focus()
		return false
	}
	
	if ((email.value==null)||(email.value=="")){
		alert("Please Enter your Email ID")
		email.focus()
		return false
	}
	
	else if (echeck(email.value)==false){
		email.value=""
		email.focus()
		return false
	}
	
	if ((org.value==null)||(org.value=="")){
		alert("Please Enter your Organisation or Company Name")
		org.focus()
		return false
	}
	
	if ((phone.value==null)||(phone.value=="")){
		alert("Please Enter Your Phone Number")
		phone.focus()
		return false
	}
	if ((comment.value==null)||(comment.value=="")){
		alert("Please Enter Your Comments")
		comment.focus()
		return false
	}
	
	return true
 }