// JavaScript Document
/* null checking */
function check_fieldsUser(form_name,f_name,d_name,c_array)
{

	var incre=0;
        
	for (incre=0; incre<c_array; incre++)
	{
		var frm="document."+form_name+"."+f_name[incre]+".value";
		var foc="document."+form_name+"."+f_name[incre];
                var password               = "document."+form_name+".txtPassword.value";
				
   				//var zipcode				   = "document."+form_name+".txtZIP.value";
				
				//var Phone				   = "document."+form_name+".txtPhone.value";
				
				var firstname			   = "document."+form_name+".txtFirstName.value";

				var lastName			   = "document."+form_name+".txtLastName.value";
				
		if(trimSpacesUser(eval(frm))=="")
		{
                    alert(d_name[incre]+" is a Required Field !!");
                    var foc_field=eval(foc);
                    foc_field.focus();
                    return false;
		}
		

		if (special(eval(frm)) == true && f_name[incre]!='txtPhone') 
     	 {
				alert(d_name[incre]+" has special characters. \nThese are not allowed. !!");
                    var foc_field=eval(foc);
                    foc_field.focus();
                    return false;    
		 }
		 
		if(f_name[incre]=='txtFirstName')
		{
		if(!(containsAlphabets(eval(firstname))))
		{
			alert("Enter a valid firstname");
			var foc_field=eval(foc);
			foc_field.focus();
			return false;
		}
		}
		if(f_name[incre]=='txtLastName')
		{
		if(!(containsAlphabets(eval(lastName))))
		{
			alert("Enter a valid lastname");
			return false;
		}
		}
		
	 	/*
		var zip_country	   = document.getElementById("billCountrySelect").value;
		
		if(zip_country == "US" || zip_country == "UM")
		{
		 if(eval(zipcode)!='' && validateZIP(eval(zipcode)))
					{	
						alert("Enter valid zip code");
                            return false;
					}
		}
					
					
		
		if(f_name[incre]=='txtPhone')
		{
			
			var regexObj = /^[0-9-(+)]+$/; //^[a-zA-z]+$/
			var phone=trimSpaces(eval(Phone));
			if (!regexObj.test(phone))
			{
				alert("Invalid Phone number");
				return false;
			}
				   

		}
					
					if(eval(Phone)!='' &&  eval(Phone)==0)
					{	
						alert("Enter valid phone number ");
                            return false;
					}
		*/
                
	}
	return true;
}




function check_login(form_name,f_name,d_name,c_array)
{

	var incre=0;
        
	for (incre=0; incre<c_array; incre++)
	{
		var frm="document."+form_name+"."+f_name[incre]+".value";
		var foc="document."+form_name+"."+f_name[incre];
                var password               = "document."+form_name+".txtPassword.value";
                var confirmPassword        = "document."+form_name+".txtConfirmPassword.value";
				
   				
               
		if(trimSpacesUser(eval(frm))=="")
		{
                    alert(d_name[incre]+" is a Required Field !!");
                    var foc_field=eval(foc);
                    foc_field.focus();
                    return false;
		}
		
		
		
			if (special(eval(frm)) == true) 
		  {
					alert(d_name[incre]+" has special characters. \nThese are not allowed. !!");
						var foc_field=eval(foc);
						foc_field.focus();
						return false;    
		}
                
	}
	return true;
}

function validateZIP(field) {
var valid = "0123456789-";
var hyphencount = 0;

if (field.length!=5 && field.length!=10) {
//alert("Please enter your 5 digit or 5 digit+4 zip code.");
return true;
}
for (var i=0; i < field.length; i++) {
temp = "" + field.substring(i, i+1);
if (temp == "-") hyphencount++;
if (valid.indexOf(temp) == "-1") {
//alert("Invalid characters in your zip code.  Please try again.");
return true;
}
if ((hyphencount > 1) || ((field.length==10) && ""+field.charAt(5)!="-")) {
//alert("The hyphen character should be used with a properly formatted 5 digit+four zip code, like '12345-6789'.   Please try again.");
return true;
   }
}

}

function special(strString) 
  {
   var iChars = "!#$%^&*()+=[]\\\';,/{}|\":<>?~_"; 
   var data =strString;
   for (var i = 0; i < data.length; i++) {
        if (iChars.indexOf(data.charAt(i)) != -1) {
          //alert ("Your string has special characters. \nThese are not allowed.");
        	return true;
        }
  }
}
 


function trimSpacesUser(stringValue) 
{
	   // Checks the first occurance of spaces and removes them
	   for(i = 0; i < stringValue.length; i++) 
	   {
		    if(stringValue.charAt(i) != " ") 
		     {			break;		}
	   }
	
	   if(i > 0) 
	   {		stringValue = stringValue.substring(i);	}
	
	   // Checks the last occurance of spaces and removes them
	   strLength = stringValue.length - 1;
	   for(i = strLength; i >= 0; i--) 
	   {
		   if(stringValue.charAt(i) != " ") 
		   {		break;		}
	   }
	
	   if(i < strLength) 
	   {		stringValue = stringValue.substring(0, i + 1);	}
	
	   // Returns the string after removing leading and trailing spaces.
	return stringValue;
}

function containsAlphabets(checkString) {
        var tempString="";
        var regExp = /^[A-Za-z]$/;
        if(checkString != null && checkString != "")
        {
          for(var i = 0; i < checkString.length; i++)
          { 
            if (!checkString.charAt(i).match(regExp))
            {
              return false;
            }
          }
        }
        else
        {
          return false;
        }
        return true;
}

function checkEmail(emailString)
{
	splitVal = emailString.split('@');
	
	if(splitVal.length <= 1) 
	{
		alert("Please Enter A Valid Email Address !!");
		return false;
	}
	if(splitVal[0].length <= 0 || splitVal[1].length <= 0) 
	{
		alert("Please Enter A Valid Email Address !!");
		return false;
	}
	
	splitDomain = splitVal[1].split('.');
	if(splitDomain.length <= 1) 
	{
		alert("Please Enter A Valid Email Address !!");
		return false;
	}
	
	if(splitDomain[0].length <= 0 || splitDomain[1].length <= 1) 
	{
		alert("Please Enter A Valid Email Address !!");
		return false;
	}
	return true;
}

function checkMail(email)
{
        var str1=email;
        var arr=str1.split('@');
        var eFlag=true;
        if(arr.length != 2)
        {
                eFlag = false;
        }
        else if(arr[0].length <= 0 || arr[0].indexOf(' ') != -1 || arr[0].indexOf("'") != -1 || arr[0].indexOf('"') != -1 || arr[1].indexOf('.') == -1)
        {
                        eFlag = false;
        }
        else
        {
                var dot=arr[1].split('.');
                if(dot.length < 2)
                {
                        eFlag = false;
                }
                else
                {
                        if(dot[0].length <= 0 || dot[0].indexOf(' ') != -1 || dot[0].indexOf('"') != -1 || dot[0].indexOf("'") != -1)
                        {
                                eFlag = false;
                        }

                        for(i=1;i < dot.length;i++)
                        {
                                if(dot[i].length <= 0 || dot[i].indexOf(' ') != -1 || dot[i].indexOf('"') != -1 || dot[i].indexOf("'") != -1 || dot[i].length > 4)
                                {
                                        eFlag = false;
                                }
                        }
                }
        }
                return eFlag;
}


// Function To Check Whether The Value Entered Is A Non Negative Float 

function check_numeric(sText)
{   
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;
 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
}
// function to check the email id 
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
	}
	
function clearText(thefield){
if (thefield.defaultValue==thefield.value)
thefield.value = ""
}

function checkAlphaNumerics(checkString) {
        var regExp = /^[A-Za-z0-9]$/;
	if(checkString!= null && checkString!= "")
        {
          for(var i = 0; i < checkString.length; i++)
          {
            if (!checkString.charAt(i).match(regExp))
            {
              return false;
            }
          }
        }
        else
        {
          return false;
        }
        return true;
}