/*

#########################################
#										#
#		Developer : Tarak Bhandary		#
#		Version : Code_V1.0	            #
	
#		Date : 22.10.2008				#
#										#
#########################################

THIS FUNCTION IS FOR VALIDATION CHECKING FOR ALL HTML FORMS. 

//PREREQUISITES

1. 	Use "MAN_[Element Name]" as the id name for the mandetory fields.
	Ex : <input id="MAN_name" type="text" name="name">

2.	Use "MAN_CONFPASS" as id name of the confirm password field.
	ex: <input id="MAN_CONFPASS" type="password" name="confirm_password">
	
3. 	Use "MAN_EMAIL" as id name of the email field
	ex: <input id="MAN_EMAIL" type="text" name="email">
	
4. 	Use "MAN_NUM" as id name for the numeric field
	ex: <input id="MAN_NUM" type="text" name="amount">	

*/
function form_validation(frm)
{
	var ts;
	for(var i=0; i<frm.elements.length; i++)
	{
		var idname = frm.elements[i].id;
		var ex = idname.split("_");
		if(ex[0]=="MAN")
		{
			var type = frm.elements[i].type;
			var val = frm.elements[i].value
			var str = frm.elements[i].name;
			var elname = str.replace(/_/g, " "); 

			var strlength = trim(val);
			if(strlength == "")
			{
				alert("Please Enter "+ucwords(elname)+":");
				
				frm.elements[i].focus();
				return false;		
			}
			
			if((type == "text" || type=="textarea" || type == "password") && val == "")
			{
				alert("Please Enter "+ucwords(elname)+":");
				frm.elements[i].focus();
				return false;	
			}
			
			if(type == "select-one" && (val == "0" || val ==""))
			{
				alert("Please Select "+ucwords(elname)+":");
				frm.elements[i].focus();
				return false;		
			}
		}
		if(ex[1]=="CONFPASS")
		{
			if(type == "password" && (frm.elements[i-1].type == "password" && frm.elements[i-1].value!=""))
			{
				if(val != frm.elements[i-1].value)
				{
					alert(ucwords(elname)+" Does Not Match Password");
					frm.elements[i].focus();
					return false;	
				}
			}
		}
		if(ex[1]=="EMAIL")
		{
			checkEmail = val;
			if((checkEmail.indexOf('@') < 0) || ((checkEmail.charAt(checkEmail.length-4) != '.') && (checkEmail.charAt(checkEmail.length-3) != '.'))) 
			{
				alert("You have entered an invalid email address!Please try again.");
				frm.elements[i].focus();
				return false;
			}
		}
		if(ex[1]=="CONFEMAIL")
		{
			checkEmail = val;
			if((checkEmail.indexOf('@') < 0) || ((checkEmail.charAt(checkEmail.length-4) != '.') && (checkEmail.charAt(checkEmail.length-3) != '.'))) 
			{
				alert("You have entered an invalid email address!Please try again.");
				frm.elements[i].focus();
				return false;
			}
			if(frm.elements[i-1].value!="")
			{
				if(val != frm.elements[i-1].value)
				{
					alert(ucwords(elname)+" Does Not Match Email");
					frm.elements[i].focus();
					return false;	
				}
			}	
		}
		if(ex[1]=="NUM")
		{
			if(isNaN(val))	
			{
				alert("Please Enter Valid "+ucwords(elname)+":");
				frm.elements[i].focus();
				return false;	
			}
		}
		if(ex[1]=="CHARRAY[]")
		{
			var flag = 0, x = 0;
			var cnt = frm.hidcnt.value;	
			for(x=0; x<cnt; x++)
			{
				if(frm.elements[i].checked==true)	
				{
					flag = 1;
					break;
				}
				i++;
			}
			if(flag==1)
			{
				var d = cnt-x;	
				i = i + d;
			}
			else
			{
				alert("Please select atleast one.");
				frm.elements[i].focus();
				return false;
			}
		}
   	}
}
function ucwords( str ) {
    return str.replace(/^(.)|\s(.)/g, function ( $1 ) { return $1.toUpperCase ( ); } );
}
function ucfirst( str ) {
    var f = str.charAt(0).toUpperCase();
    return f + str.substr(1, str.length-1);
}

function LTrim( value ) {

var re = /\s*((\S+\s*)*)/;
return value.replace(re, "$1");

}

// Removes ending whitespaces
function RTrim( value ) {

var re = /((\s*\S+)*)\s*/;
return value.replace(re, "$1");

}

// Removes leading and ending whitespaces
function trim( value ) {

return LTrim(RTrim(value));

}
/////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////

function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null
	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		alert("This example 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
	}
}

/////////////////////////////////////////////////////////////////////
var dtCh= "http://61.95.144.117:81/";
var minYear=1900;
var maxYear=2100;

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 strMonth=dtStr.substring(0,pos1)
	var strDay=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 enter 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
}