// feedback validation function //

//	^\d+\.\d+$/.test(S)   As currency , n decimals 
	
	
	//Regular expression for decimal numbers
/*	/^\d+$/                	 	All-digit
  /^[1-9]\d*$/            		All-digit, non-zero
  /^\s*[-+]\d+\s*$/       		Unbroken signed integer + spaces
  /^\d{1,5}$/             		1 to 5 digits
  /^\d+\.\d\d$/				As currency, 2 decimals
  /^\d+(\.\d{2})?$/        		As currency, 2 decimals optional
  /^[+-]?\d+(\.\d+)?(e[-+]?\d+)?$/i	Allows +3 -3.7 -3.4e+56 etc.
  not /\..*\./				Fewer than two dots
  /^\d{1,3}(,\d\d\d)*\.\d\d$/           Thou-Sep Number dot 2 decimals
  /^[A-Za-z0-9 ]{3,20}$/     text validation with space and digit
  /^\(?(\d{3})\)?[- ]?(\d{3})[- ]?(\d{4})$/     US Phoen number validation (eg is (308)-135-7895 or 308-135-7895 or 308135-7895 or 3081357895.)
  */
function validate(feedback) {
	
var fname = feedback.fname.value;
var lname = feedback.lname.value;
var email = feedback.email.value;
//var subject = feedback.subject.value;
var commentmsg = feedback.commentmsg.value;

  var yearreg = /^\d{4}$/; 
  var mob = /^\d{10}$/;
  var nameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var tithireg = /^[A-Za-z ]{3,20}$/;
  var emailRegex = /^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/;
  var messageRegex = new RegExp(/<\/?\w+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)\/?>/gim);
  var endsreg =  /^\d{2}(\.\d{2})?$/;
  var passreg = /(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{6,}/;
    var namval = /^[A-Za-z]{3,20}$/;
  var usphone =/^(\d{3})[-](\d{3})[-](\d{4})$/;
  //var usphone =/^\(?(\d{3})\)?[-]?(\d{3})[-]?(\d{4})$/;

    
  
	if(fname == "") 
	{
		inlineMsg('fname','You must enter your First name.');
		return false;
	}

	if(!fname.match(namval)) 
	{
		inlineMsg('fname','You have entered an invalid First name.');
		return false;
	}

	if(lname == "") 
	{
		inlineMsg('lname','You must enter your Last name.');
		return false;
	}

	if(!lname.match(namval)) 
	{
		inlineMsg('lname','You have entered an invalid Last name.');
		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(subject == "") 
	{
		inlineMsg('subject','You must enter your Subject');
		return false;
	}

	if(!subject.match(messageRegex)) 
	{
		inlineMsg('subject','You have entered an invalid Subject.');
		return false;
	}
*/


if(commentmsg == "") 
	{
    	inlineMsg('commentmsg','<strong>Error</strong><br />You must Enter Feedback.');
	    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) {
  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);
  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));
}

// hide the feedback 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 = "../img/msg_arrow.gif"; 
}// feedback validation function //