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 Address")
		   return false
		}

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

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

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

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

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

 		 return true					
	}
	
	function ValidateForm(){
	
	var firstnameID=document.contactUs.firstname
	var lastnameID=document.contactUs.lastname
	var companyID=document.contactUs.company
	var daytimephoneID=document.contactUs.daytimephone
	var emailID=document.contactUs.email
	
	if ((firstnameID.value==null)||(firstnameID.value=="")){
		alert("Your First Name is Required")
		firstnameID.focus()
		return false
	}
	
	if ((lastnameID.value==null)||(lastnameID.value=="")){
		alert("Your Last Name is Required")
		lastnameID.focus()
		return false
	}
	
	if ((companyID.value==null)||(companyID.value=="")){
		alert("Your Company Name is Required")
		companyID.focus()
		return false
	}
	
	if ((daytimephoneID.value==null)||(daytimephoneID.value=="")){
		alert("Your Daytime Phone Number is Required")
		daytimephoneID.focus()
		return false
	}
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Your Email Address is Required")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}	
	return true
 }