// JavaScript Document


var xmlHttp
var AjaObject;

function textCounter(field,cntfield,maxlimit) {
	if (field.value.length > maxlimit) // if too long...trim it!
	field.value = field.value.substring(0, maxlimit);
	// otherwise, update 'characters left' counter
	else
	cntfield.value = maxlimit - field.value.length;
}

function alphanumeric(alphane)
{
	var numaric = alphane;
	for(var j=0; j<numaric.length; j++)
	{
		  var alphaa = numaric.charAt(j);
		  var hh = alphaa.charCodeAt(0);
		  if((hh > 47 && hh<58) || (hh > 64 && hh<91) || (hh > 96 && hh<123))
		  {
		  }
		else	
		{
			 alert("Invalid Character! Only Alpha Numeric");
			 return false;
		  }
	}
// alert("Your Alpha Numeric Test Passed");
 return true;
}

function rate_box(postid,uid)
{
	if(postid!='')
	{
		AjaObject="ratebox_ajax_"+postid;
		var url = "ratebox.php?postid=" + postid + "&uid=" + uid + "&submit=yes";
		xmlHttp=GetXmlHttpObject(stateChanged)
		xmlHttp.open("GET", url , true)
		xmlHttp.send(null)
	}
}

function showday(day,option)
{
	if(day!='')
	{
		AjaObject="ShowPost";
		var url = "showpost.php?currdate=" + day + "&option=" + option;
		xmlHttp=GetXmlHttpObject(stateChanged)
		xmlHttp.open("GET", url , true)
		xmlHttp.send(null)
	}
}

function showpages(day,pgno)
{
	if(day!='')
	{
		AjaObject="ShowPost";
		var url = "showpost.php?currdate=" + day + "&PageNo=" + pgno;
		xmlHttp=GetXmlHttpObject(stateChanged)
		xmlHttp.open("GET", url , true)
		xmlHttp.send(null)
	}
}

function searchuser(vid)
{
	if(vid!='')
	{
		if(alphanumeric(vid)==false)
		{
			return false;
		}

		AjaObject="txtHint";
		var url = "searchuser.php?userid=" + vid
		xmlHttp=GetXmlHttpObject(stateChanged)
		xmlHttp.open("GET", url , true)
		xmlHttp.send(null)
	}
}

function searchemail(vid)
{
	if(vid!='')
	{
	
		AjaObject="txtEmail";
		var url = "searchemail.php?userid=" + vid
		xmlHttp=GetXmlHttpObject(stateChanged)
		xmlHttp.open("GET", url , true)
		xmlHttp.send(null)
	}
}



function stateChanged() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
	document.getElementById(AjaObject).innerHTML=xmlHttp.responseText 
	} 
} 


function GetXmlHttpObject(handler)
{ 
var objXmlHttp=null

if (navigator.userAgent.indexOf("Opera")>=0)
{
alert("This function doesn't work in Opera") 
return 
}
if (navigator.userAgent.indexOf("MSIE")>=0)
{ 
var strName="Msxml2.XMLHTTP"
if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
{
strName="Microsoft.XMLHTTP"
} 
try
{ 
objXmlHttp=new ActiveXObject(strName)
objXmlHttp.onreadystatechange=handler 
return objXmlHttp
} 
catch(e)
{ 
alert("Error. Scripting for ActiveX might be disabled") 
return 
} 
} 
if (navigator.userAgent.indexOf("Mozilla")>=0)
{
objXmlHttp=new XMLHttpRequest()
objXmlHttp.onload=handler
objXmlHttp.onerror=handler 
return objXmlHttp
}
} 


function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
}



var dtCh= "-";
var minYear=1940;
var maxYear=2000;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please select a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}


  function GetXmlHttpObject() {
    var xmlhttp=null;
    try {
        // Firefox, Opera 8.0+, Safari
        xmlhttp=new XMLHttpRequest();
    }
    catch (e) {
        // Internet Explorer
        try {
            xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e) {
            xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    return xmlhttp;
	}


function chkLogin(id,userID,uid)
	{
		//alert(" ID "+id+"session ID"+userID+" Uid"+uid);
		//
		if( userID!=""  && userID!=uid){
			
			
			xmlhttp=GetXmlHttpObject();
   			if (xmlhttp==null) {
        		alert ("Your browser does not support AJAX!");
        		return;
    		}		 
			var url="inc/ranking.php";
			url=url+"?id="+id;
			//alert(url);
			xmlhttp.onreadystatechange=function() {
		    	if (xmlhttp.readyState==4 || xmlhttp.readyState=="complete") {
		            document.getElementById('rank_'+id).innerHTML=xmlhttp.responseText;
        		}
    		}
    		
			xmlhttp.open("GET",url,true);
    		xmlhttp.send(null);
			
			 
			
		}else if(userID!=uid){
			window.location.href='index.php?p=login';
		}
		document.getElementById('Image7').removeAttribute('onclick',"");
	}