var xmlHttp

function checkSubmit(gender,name,email,address,country,comment)
{
	if(document.getElementById("cbotitle").value=="")
	{
		alert("Please to insert  title name.");
		document.getElementById("cbotitle").value="";
		document.getElementById("cbotitle").focus();
		return false;
	}
	if(document.getElementById("txtname").value=="")
	{
		alert("Please to insert name.");
		document.getElementById("txtname").value="";
		document.getElementById("txtname").focus();
		return false;
	}
	if(document.getElementById("txtemail").value=="")
	{
		alert("Please to insert  email.");
		document.getElementById("txtemail").value="";
		document.getElementById("txtemail").focus();
		return false;
	}
	if(emailCheck (document.getElementById("txtemail").value)==false)
	{
				document.getElementById("txtemail").focus();
				return false;
	}
	
	else
	{
		xmlHttp=GetXmlHttpObject()
		if (xmlHttp==null)
		 {
		 alert ("Browser does not support HTTP Request")
		 return
		 } 
		var url="send_con.php"
		url=url+"?gender="+gender
		url=url+"&name="+name
		url=url+"&email="+email
		url=url+"&address="+address
		url=url+"&country="+country
		url=url+"&comment="+comment
		url=url+"&sid="+Math.random()
		xmlHttp.onreadystatechange=stateChanged 
		xmlHttp.open("GET",url,true)
		xmlHttp.send(null)
	}
} 

function stateChanged() 
{ 
 if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
		document.getElementById("loading").style.display="none";
		
		
		if(xmlHttp.responseText != "")
		{
				if(xmlHttp.responseText == "Y")
				{
					document.getElementById("msgstatus").innerHTML="<div align=\"center\"><font color=\"#336699\" size=\"1\" face=\"MS Sans Serif, Tahoma, sans-serif\"><img src=\"./images/tick.png\">&nbsp;&nbsp;Feedback has send complete. Thank you for feedback.</font></div>";		
					
					document.getElementById("cbotitle").value="Mr.";
					document.getElementById("txtname").value="";
					document.getElementById("txtemail").value="";
					document.getElementById("txtaddress").value="";
					document.getElementById("cbocountry").value="emtry";
					document.getElementById("txtcomment").value="";
				}
				else
				{
					document.getElementById("msgstatus").innerHTML="<div align=\"center\"><font color=\"#FF0000\" size=\"1\" face=\"MS Sans Serif, Tahoma, sans-serif\"><img src=\"./images/publish_x.png\">&nbsp;&nbsp;Feedback has send faill. Please try agian.</font></div>";		
				}
				
 		}
 } 
 else
 {
 			document.getElementById("panel").style.display="none";
	    	document.getElementById("loading").innerHTML="<table width=\"50%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\"><tr> <td width=\"32%\"><div align=\"center\"><img src=\"images/loading.gif\" width=\"32\" height=\"32\"></div></td><td width=\"68%\"><div align=\"center\"><font color=\"#336699\" size=\"2\" face=\"MS Sans Serif, Tahoma, sans-serif\">Sending ...</font></div></td></tr></table>";		
 }
} 



function GetXmlHttpObject()
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
 {
 objXMLHttp=new XMLHttpRequest()
 }
else if (window.ActiveXObject)
 {
 objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
 }
return objXMLHttp
}

// check Email
function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
	alert("Email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The username doesn't seem to be valid.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.")
    return false
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   alert("The address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}