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 validate_email_form(email)
{
	var notChecked = true;
	if (email.Name.value == "") 
	{
		alert("You have missing fields. Please enter all fields.");
		email.Name.focus()
		return false;
	}
	if ((email.Email.value==null)||(email.Email.value=="")){
		alert("Please Enter your Email Address")
		email.Email.focus()
		return false
	}
	if (echeck(email.Email.value)==false){
		email.Email.value=""
		email.Email.focus()
		return false
	}
	if (email.Subject.value == "") 
	{
		alert("You have missing fields. Please enter all fields.");
		email.Subject.focus()
		return false;
	}
	if (email.Message.value == "") 
	{
		alert("Please enter a message.")
		email.Message.focus()
		return false
	}
	return true
}