function calcHeight()
{

  var the_height=
    document.getElementById('the_iframe').contentWindow.
      document.body.scrollHeight;

   document.getElementById('the_iframe').height= the_height;
}




function sendMail(){
	errMsg = false;
	errTxt = " ";
	reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	var address = document.getElementById("email").value;

	if (document.getElementById("first_name").value == ""){
		errMsg = true;
		errTxt+="Please enter your first name \n";
	}

    if (document.getElementById("last_name").value == ""){
		errMsg = true;
		errTxt+="Please enter your last name \n";
	}

	
	if (document.getElementById("company").value == ""){
		errMsg = true;
		errTxt+="Please enter your company's name \n";
	}

	if (document.getElementById("zip_code").value == ""){
		errMsg = true;
		errTxt+="Please enter a zip code \n";
	}

	if (errMsg==true){
		alert("Please fix the following errors: \n" + "\n" + errTxt );
		document.getElementById("first_name").focus();

		return false;
	}
	if (errMsg==false){return true;}


}