function validate_required(field,alerttxt)
{
		with (field)
		{
			if (value==null||value=="")					
			{
				alert(alerttxt);
				return false;
			}
			else
			{
				return true;
			}
		}
}



function echeck(str,alerttxt) 
{
		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 validate_form(thisform)
{
	with (thisform)
	{
		if (validate_required(firstName,"First Name must be filled out!")==false)
		{
			firstName.focus();
			return false;
		}
		if (validate_required(lastName,"Last Name must be filled out!")==false)
		{
			lastName.focus();
			return false;
		}
		if (echeck(email.value,"Email must be filled out!")==false)
		{
			email.focus();
			return false;
		}
		if (validate_required(phoneArea,"Phone area code must be filled out!")==false)
		{
			phoneArea.focus();
			return false;
		}
		if (validate_required(phonePrefix,"Phone No. must be filled out!")==false)
		{
			phonePrefix.focus();
			return false;
		}
		if (validate_required(phoneSuffix,"Phone No. must be filled out!")==false)
		{
			phoneSuffix.focus();
			return false;
		}
		if (validate_required(inquiryText,"Inquiry must be filled out!")==false)
		{
			inquiryText.focus();
			return false;
		}
	}
}