// form validation function //
function Inint_AJAX() {
	try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} //IE
	try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE
	try { return new XMLHttpRequest();  } catch(e) {} //Native Javascript
	alert("XMLHttpRequest not supported");
	return null;
};
var xmlHttp;
function createXMLHttpRequest() {
	if (window.ActiveXObject) {
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	} 
	else if (window.XMLHttpRequest) {
		xmlHttp = new XMLHttpRequest();                
	}
}
function validate(form,code) {
  var title = form.title_sel.value;
  var name = form.name.value;
  var lastname = form.lastname.value;
  var strabe = form.strabe.value;
  var stadt = form.stadt.value;
  var email = form.email.value;
  var telephone = form.telephone.value;
  var message = form.message.value;
  var chk_telephone = form.check_telephon.checked;
  var chk_email = form.check_email.checked;
  var nameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  var messageRegex = new RegExp(/<\/?\w+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)\/?>/gim);
  var security_code = form.security_code.value;
  if(title == "") {
    inlineMsg('title_sel','Wie dürfen wir Sie anreden? Bitte auswählen..',2);
    return false;
  }
  if(name == "") {
	inlineMsg('name','Bitte geben Sie Ihren Vornamen ein! Vielen Dank.',2);
	return false;
  }
  if(lastname == "") {
    inlineMsg('lastname','Bitte geben Sie Ihren Nachnamen/Firma ein! Vielen Dank.',2);
    return false;
  }
  //if(strabe == "") {
  //  inlineMsg('strabe','Bitte geben Sie die Straße mit Hausnummer ein. Vielen Dank!',2);
  //  return false;
  //}
  //if(stadt == "") {
  //  inlineMsg('stadt','Bitte geben Sie PLZ und Ort ein.',2);
  //  return false;
  //}
  if(email == "") {
	inlineMsg('email','Bitte geben Sie Ihre E-Mail ein! Vielen Dank.',2);
	return false;
  }
  if(!email.match(emailRegex)) {
	inlineMsg('email','E-Mail Adresse ist ungültig.',2);
	return false;
  }
  if(security_code=="") {
  	inlineMsg('security_code','Bitte geben Sie die Zahlen im schwarzen Kasten in das Textfeld "Sicherheitsüberprüfung“ ein. Vielen Dank!');
	return false;
  }
  
  return true;
}



// START OF MESSAGE SCRIPT //

var MSGTIMER = 20;
var MSGSPEED = 5;
var MSGOFFSET = 5;
var MSGHIDE = 9;

// build out the divs, set attributes and call the fade function //
function inlineMsg(target,string,autohide) {
  var msg;
  var msgcontent;
  if(!document.getElementById('msg')) {
    msg = document.createElement('div');
    msg.id = 'msg';
    msgcontent = document.createElement('div');
    msgcontent.id = 'msgcontent';
    document.body.appendChild(msg);
    msg.appendChild(msgcontent);
    msg.style.filter = 'alpha(opacity=0)';
    msg.style.opacity = 0;
    msg.alpha = 0;
  } else {
    msg = document.getElementById('msg');
    msgcontent = document.getElementById('msgcontent');
  }
  msgcontent.innerHTML = string;
  msg.style.display = 'block';
  var msgheight = msg.offsetHeight;
  //msgarrow.style.height = msgheight + 'px';
  var targetdiv = document.getElementById(target);
  var targetheight = targetdiv.offsetHeight;
  var targetwidth = targetdiv.offsetWidth;
  var topposition = topPosition(targetdiv) - ((msgheight - targetheight) / 2);
  var leftposition = leftPosition(targetdiv) + targetwidth + MSGOFFSET;
  msg.style.top = topposition + 'px';
  msg.style.left = leftposition + 'px';
  clearInterval(msg.timer);
  msg.timer = setInterval("fadeMsg(1)", MSGTIMER);
  if(!autohide) {
    autohide = MSGHIDE;  
  }
  window.setTimeout("hideMsg()", (autohide * 2500));
}

// hide the form alert //
function hideMsg(msg) {
  var msg = document.getElementById('msg');
  if(!msg.timer) {
    msg.timer = setInterval("fadeMsg(0)", MSGTIMER);
  }
}

// face the message box //
function fadeMsg(flag) {
  if(flag == null) {
    flag = 1;
  }
  var msg = document.getElementById('msg');
  var value;
  if(flag == 1) {
    value = msg.alpha + MSGSPEED;
  } else {
    value = msg.alpha - MSGSPEED;
  }
  msg.alpha = value;
  msg.style.opacity = (value / 100);
  msg.style.filter = 'alpha(opacity=' + value + ')';
  if(value >= 99) {
    clearInterval(msg.timer);
    msg.timer = null;
  } else if(value <= 1) {
    msg.style.display = "none";
    clearInterval(msg.timer);
  }
}

// calculate the position of the element in relation to the left of the browser //
function leftPosition(target) {
  var left = 0;
  if(target.offsetParent) {
    while(1) {
      left += target.offsetLeft;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.x) {
    left += target.x;
  }
  return left;
}

// calculate the position of the element in relation to the top of the browser window //
function topPosition(target) {
  var top = 0;
  if(target.offsetParent) {
    while(1) {
      top += target.offsetTop;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.y) {
    top += target.y;
  }
  return top;
}

// preload the arrow //
if(document.images) {
  arrow = new Image(7,80); 
  arrow.src = "../image/msg_arrow.gif";
}