// form validation function //
function validate(form) {
  var name = form.name.value;
  var email = form.email.value;
  var gender = form.gender.value;
  var message = form.message.value;
  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);
  if(name == "") {
    inlineMsg('name','You must enter your name.',2);
    return false;
  }
  if(!name.match(nameRegex)) {
    inlineMsg('name','You have entered an invalid name.',2);
    return false;
  }
  if(email == "") {
    inlineMsg('email','<strong>Error</strong><br />You must enter your email.',2);
    return false;
  }
  if(!email.match(emailRegex)) {
    inlineMsg('email','<strong>Error</strong><br />You have entered an invalid email.',2);
    return false;
  }
  if(gender == "") {
    inlineMsg('gender','<strong>Error</strong><br />You must select your gender.',2);
    return false;
  }
  if(message == "") {
    inlineMsg('message','You must enter a message.');
    return false;
  }
  if(message.match(messageRegex)) {
    inlineMsg('message','You have entered an invalid message.');
    return false;
  }
  return true;
}

// START OF MESSAGE SCRIPT //

var MSGTIMER = 20;
var MSGSPEED = 5;
var MSGOFFSET = 3;
var MSGHIDE = 3;

// build out the divs, set attributes and call the fade function //
function inlineMsg(target,string,autohide) {
	
	autohide=3; // hitender - update
  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;
  var targetdiv = document.getElementById(target);
  if( typeof(needFocus) != 'undefined' && needFocus )
  	targetdiv.focus();
  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 * 1000));
}

// ################# Rejil - 3 Dec, 2008 ##################

// build out the divs, set attributes and call the fade function //
function inlineMsgL(target,string,autohide) {
	
  var msgL;
  var msgcontentL;
  if(!document.getElementById('msgL')) {
    msgL = document.createElement('div');
    msgL.id = 'msgL';
    msgcontentL = document.createElement('div');
    msgcontentL.id = 'msgcontentL';
    document.body.appendChild(msgL);
    msgL.appendChild(msgcontentL);
    msgL.style.filter = 'alpha(opacity=0)';
    msgL.style.opacity = 0;
    msgL.alpha = 0;
  } else {
    msgL = document.getElementById('msgL');
    msgcontentL = document.getElementById('msgcontentL');
  }
  msgcontentL.innerHTML = string;
  msgL.style.display = 'block';
  var msgheight = msgL.offsetHeight;
  var targetdiv = document.getElementById(target);
  if( typeof(needFocus) != 'undefined' && needFocus )
  	targetdiv.focus();
  var targetheight = targetdiv.offsetHeight;
  var targetwidth = targetdiv.offsetWidth;
  var topposition = topPosition(targetdiv) - ((msgheight - targetheight) / 2);
  var leftposition = leftPosition(targetdiv) - msgL.offsetWidth-3 ;
  msgL.style.top = topposition + 'px';
  msgL.style.left = leftposition + 'px';
  clearInterval(msgL.timer);
  msgL.timer = setInterval("fadeMsgL(1)", MSGTIMER);
  if(!autohide) {
    autohide = MSGHIDE;  
  }
  window.setTimeout("hideMsgL()", (autohide * 1000));
}

// hide the form alert //
function hideMsgL(msgL) {
  var msgL = document.getElementById('msgL'); //  rejil
  if(!msgL.timer) {
    msgL.timer = setInterval("fadeMsgL(0)", MSGTIMER);
  }
}

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

//############### Rejil #########
// 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;
  }
 // alert(left);
  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 = "http://static.munchline.com/images/msg_arrow.gif"; 
}