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