// JavaScript Document
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 keypress_int(e) {
	var key;
	var keychar;
	var reg;
	
	if(window.event) {
		// for IE, e.keyCode or window.event.keyCode can be used
		key = e.keyCode; 
	}
	else if(e.which) {
		// netscape
		key = e.which; 
	}
	else {
		// no event, so pass through
		//return true;
	}

	keychar = String.fromCharCode(key);
  if(!isInteger(keychar))
    		return false; // cancel event otherwise
}

function keypress_flt(e,val)
 {
 
	var key;
	var keychar;
	var reg;
	
	if(window.event) {
		// for IE, e.keyCode or window.event.keyCode can be used
		key = e.keyCode; 
	}
	else if(e.which) {
		// netscape
		key = e.which; 
	}
	else {
		// no event, so pass through
		return true;
	}

	keychar = String.fromCharCode(key);

  if(key=="46")
	{
	if(val.indexOf(".")>-1)
	return false;
	}
  else if(!isInteger(keychar))
    		return false;
return true;	
}

function trim(inputString) 
{
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
	
   var retValue = inputString;

   var ch = retValue.substring(0, 1);
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }

   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }

   return retValue; // Return the trimmed string back to the user
} // Ends the "trim" function


/*
ALPHANUMERIC VALIDATION
//to check if the field contains both alphabets and numbers
usage:
Element – name of the control, like frm.firstname
Message – Field Name that we want to display in alert message.
Required – Set this to ‘yes’ if the field is mandatory, otherwise ‘no’.
 if(!isValidAlphaNumeric(frm.firstname,'First Name','yes'))
 return;
*/
function isValidAlphaNumeric(element, msg, required)
{
 var i=0;
 var ValidData="abcdefghijklmnopqrstuvwxyz1234567890_-";
 var Data=element.value;
 
 if(element.value == "")
 {
  var rval = trim(required);
  if (rval.toLowerCase() == "yes" || rval == 1)
  {
   alert("Please enter "+msg);
   element.focus();
   return false;
  }
 } 
 if(element.value != "")
 {
  for(i=0;i<Data.length;i++)
  {
   if(ValidData.indexOf(Data.charAt(i))==-1)
   {
    return false;
   }
  }
 }
 return true;
}

// validation for alfa

function isValidAlphaNum(element, msg, required)
{
 var i=0;
 var ValidData="abcdefghijklmnopqrstuvwxyz1234567890";
 var Data=element.value;
 
 if(element.value == "")
 {
  var rval = trim(required);
  if (rval.toLowerCase() == "yes" || rval == 1)
  {
   alert("Please enter "+msg);
   element.focus();
   return false;
  }
 } 
 if(element.value != "")
 {
  for(i=0;i<Data.length;i++)
  {
   if(ValidData.indexOf(Data.charAt(i))==-1)
   {
    return false;
   }
  }
 }
 return true;
}