// JavaScript Document
// <script type="text/javascript" src="validationfunctions.js"></>

// Support Functions
function strip(filter,str){
  var i,curChar;
  var retStr = '';
  var len = str.length;
  for(i=0; i<len; i++){
    curChar = str.charAt(i);
    if(filter.indexOf(curChar)<0) //not in filter - keep
		  retStr += curChar;
   }
  return retStr;
}

function reformat(str){
  var arg;
  var pos = 0;
  var retStr = '';
  var len = reformat.arguments.length;
  for(var i=1; i<len; i++){
    arg = reformat.arguments[i];
    if(i%2==1)
      retStr += arg;
    else {
      retStr += str.substring(pos, pos + arg);
      pos += arg;
    	}
   }
  return retStr;
}
//End Support Functions

//Validation Rules
//Checks for any values except spaces
   function notEmpty(str){
      if(strip(" \n\r\t",str).length ==0)
         return false;
      else
         return true;
   }

   function validateInteger(str){
      str = strip(' \n\r\t',str);
      //remove leading zeros, if any
      while(str.length > 1 && str.substring(0,1) == '0'){
         str = str.substring(1,str.length);
      }
      var val = parseInt(str);
      if(isNaN(val))
         return false;
      else
         return true;
   }

   function validateFloat(str){
      str = strip(' \n\r\t',str);
      //remove leading zeros, if any
      while(str.length > 1 && str.substring(0,1) == '0'){
         str = str.substring(1,str.length);
      }
      var val = parseFloat(str);
      if(isNaN(val))
         return false;
      else
         return true;
   }

function validateDate(str){
      var dateVar = new Date(str);
      if(isNaN(dateVar.valueOf()) || 
         (dateVar.valueOf() ==0))
         return false;
      else
         return true;
   }

function validateEMail(str){
      str = strip(" \n\r\t",str);
      if(str.indexOf("@") > -1 && str.indexOf(".") > -1)
         return true;
      else
         return false;
   }

function validateCC(str,type){
      str = strip("-./_\n\r\t\\",str);
      if(type=="1")
         if(str.charAt(0)!="4")
            return false;
      if(type=="2")
         if(str.charAt(0)!="5")
            return false;
      if(type=="3")
         if(str.charAt(0)!="6")
            return false;
      if(type=="4")
         if(str.charAt(0)!="3")
            return false;
      if(validateInteger(str) && 
         ((str.length==15&&type=="4") || 
         str.length==16))
         return true;
      else
         return false;
   }

function formatDate(str,style){
      var dateVar = new Date(str);
      var year = dateVar.getYear();
      if(year<10)
         year += 2000;
      if(year<100)
         year += 1900;
      switch(style){
         case "MM/DD/YY":
            return (dateVar.getMonth() + 1) + "/" + 
              dateVar.getDate() + "/" + year;
            break;
         case "DD/MM/YY":
            return dateVar.getDate() + "/" + 
              (dateVar.getMonth() + 1) + "/" + year;
            break;
         case "Month Day, Year":
            return getMonthName(dateVar) + " " + 
              dateVar.getDate() + ", " + year;
            break;
         case "Day, Month Day, Year":
            return getDayName(dateVar) + ", " + 
              getMonthName(dateVar) + " " + 
              dateVar.getDate() + ", " + year;
            break;
         default:
            return (dateVar.getMonth() + 1) + "/" + 
              dateVar.getDate() + "/" + year;
            break;
      }
   }