function doesNotXist(userEntry)
   {
     if (userEntry==null || userEntry==" " || userEntry=="")
      {return true;}
     else
      {return false;} 
   }

function veriForm()
    {
     var message="";
     var erreurs=0;

        if(!isEmail(document.contact.SENDERMAIL.value)&& doesNotXist(document.contact.tel.value))
       {
        message+="Please enter a valid Email address or phone number\n";
        erreurs+=1;
       }
         if(doesNotXist(document.contact.company.value))
       {
        message+="Please enter Company\n";
        erreurs+=1;
       }
         if(doesNotXist(document.contact.SENDERNAME.value))
       {
        message+="Please enter Name\n";
        erreurs+=1;
       }	

	
	 if(erreurs>3)
       {
        alert('Please fill out the form before sending!');
		return false;
       }
       else if(message!="")
         {
          alert(message);
		  return false;
         }
          else
         {
		  document.contact.submit();
		  return true;
         }
    }

function isEmail(str) {
  // are regular expressions supported?
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) 
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}