function formcheck(){
		
if ( typeof ( document.E_mail.web ) != "undefined" ) {
	if (document.E_mail.web.value == ''){
	  alert("Please Select Webinar");
	  document.E_mail.web.focus();
	  return false;
	   }
}

if ( typeof ( document.E_mail.first_name ) != "undefined" ) {
	if (document.E_mail.first_name.value == ''){
	  alert("Please write your name");
	  document.E_mail.first_name.focus();
	  document.E_mail.first_name.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.last_name ) != "undefined" ) {
if (document.E_mail.last_name.value == ''){
	  alert("Please write your last name");
	  document.E_mail.last_name.focus();
	  document.E_mail.last_name.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.company ) != "undefined" ) {
if (document.E_mail.company.value == ''){
	  alert("Please write your company name");
	  document.E_mail.company.focus();
	  document.E_mail.company.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.address ) != "undefined" ) {
if (document.E_mail.address.value == ''){
	  alert("Please write your address");
	  document.E_mail.address.focus();
	  document.E_mail.address.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.city_name ) != "undefined" ) {
if (document.E_mail.city_name.value == ''){
	  alert("Please write your city name");
	  document.E_mail.city_name.focus();
	  document.E_mail.city_name.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.state ) != "undefined" ) {
if (document.E_mail.state.value == ''){
	  alert("Please write state name");
	  document.E_mail.state.focus();
	  document.E_mail.state.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.zip ) != "undefined" ) {
if (document.E_mail.zip.value == ''){
	  alert("Please write zip code");
	  document.E_mail.zip.focus();
	  document.E_mail.zip.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.country ) != "undefined" ) {
if (document.E_mail.country.value == ''){
	  alert("Please write country name");
	  document.E_mail.country.focus();
	  document.E_mail.country.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.jobtitle ) != "undefined" ) {
if (document.E_mail.jobtitle.value == ''){
	  alert("Please write your job title");
	  document.E_mail.jobtitle.focus();
	  document.E_mail.jobtitle.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.business ) != "undefined" ) {
if (document.E_mail.business.value == ''){
	  alert("Please write business title");
	  document.E_mail.business.focus();
	  document.E_mail.business.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.website ) != "undefined" ) {
if (document.E_mail.website.value == ''){
	  alert("Please write company web site");
	  document.E_mail.website.focus();
	  document.E_mail.website.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.price_name ) != "undefined" ) {
if (document.E_mail.price_name.value == ''){
	  alert("Please select price package");
	  document.E_mail.price_name.focus();
	  document.E_mail.price_name.select();
	  return false;
	   }
}

if ( typeof ( document.E_mail.bill_name ) != "undefined" ) {
if (document.E_mail.bill_name.value == ''){
	  alert("Please write Purchase Order or Billing Reference");
	  document.E_mail.bill_name.focus();
	  document.E_mail.bill_name.select();
	  return false;
	   }
}


if ( typeof ( document.E_mail.uKey ) != "undefined" ) {
if (document.E_mail.uKey.value == ''){
	  alert("Please write Image String");
	  document.E_mail.uKey.focus();
	  document.E_mail.uKey.select();
	  return false;
	   }
}
// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function isInteger(s){
   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
 }

function stripCharsInBag(s, bag){
   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)   {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
 }

       function checkInternationalPhone(strPhone){
         s=stripCharsInBag(strPhone,validWorldPhoneChars);
         return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
     }

   if ( typeof ( document.E_mail.phone_number ) != "undefined" ) {
	var Phone=document.E_mail.phone_number
	
	if ((Phone.value==null)||(Phone.value=="")){
		alert("Please Enter your Phone Number")
		Phone.focus()
		return false
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number")
		Phone.value=""
		Phone.focus()
		return false
	}
   }
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
		 }
				
	}

if ( typeof ( document.E_mail.submit_by ) != "undefined" ) {
	var emailID=document.E_mail.submit_by
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
}

if ( typeof ( document.E_mail.comments_reason ) != "undefined" ) {
    if (document.E_mail.comments_reason.value == ''){
	alert("Please type your comments or question");
	document.E_mail.comments_reason.focus();
	return false;
	}
}

if ( typeof ( document.E_mail.nameto ) != "undefined" ) {
    if (document.E_mail.nameto.value == ''){
	alert("Please type their name");
	document.E_mail.nameto.focus();
	return false;
	}
}
	
	if ( typeof ( document.E_mail.name ) != "undefined" ) {
    if (document.E_mail.name.value == ''){
	alert("Please type your name");
	document.E_mail.name.focus();
	return false;
	}
}

if ( typeof ( document.E_mail.emailto ) != "undefined" ) {
	var emailID=document.E_mail.emailto
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter their Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
}


if ( typeof ( document.E_mail.emailfrom ) != "undefined" ) {
	var emailID=document.E_mail.emailfrom
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
}


if ( typeof ( document.E_mail.comments ) != "undefined" ) {
    if (document.E_mail.comments.value == ''){
	alert("Please type your comments");
	document.E_mail.comments.focus();
	return false;
	}
}

	}