(function($){

  $.fn.extend({
  
    validate:function(options){
		  var options = $.extend({
		    debug: false
		  }, options); 
		  
	    var getmeta = function(el) {
	      var data = '';
	      var m = /({.*})/.exec(el.className);
	      if (m) data = m[1];
	      if (data.indexOf('{')<0) data='{'+data+'}';
        try {
          return eval('('+data+')')||{};
        } catch(e) {
			    return {};
		    }
	    }
	    
	    var getelements = function(frm){
	      var cache = {};
	      return $([]).add(frm.elements).filter(":input").not(":submit, :reset, :image, [disabled]").filter(function() {
	        if (this.name in cache) return false;
	        cache[this.name] = true;
	        return true;
	      });
	    }
	    
	    var methods = {
	      
	      req: function(el,value,meta){
		      switch( el.nodeName.toLowerCase() ) {
		        case 'select':
			        var options = $("option:selected", el);
			        return options.length > 0 && ( el.type == "select-multiple" || ($.browser.msie && !(options[0].attributes['value'].specified) ? options[0].text : options[0].value).length > 0);
		        case 'input':
			        if ( /radio|checkbox/i.test(el.type) )
				        return this.getLength(value, el) > 0;
		        default:
			        return $.trim(value).length > 0;
		      }
	      },
	      phone: function(el,value,meta){
	        return /^(\(?\d\d\d\)?)?( |-|\.)?\d\d\d( |-|\.)?\d{4,4}(( |-|\.)?[ext\.]+ ?\d+)?$/i.test(value);
	      },
	      url: function(el,value){
			    return /http:\/\/+(www\.)?[a-z0-9\-\.]{3,}\.[a-z]{2,4}$/i.test(value);
	      },
	      email: function(el,value){
          return /^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}/i.test(value);
	      },
	      number: function(el,value){
	        return /^-?(?:\d+|\d{1,3}(?:,\d{3})+)(?:\.\d+)?$/i.test(value);
	      },
	      zip: function(el,value){
	        return /^((\d{5}-\d{4})|(\d{5}))?$/i.test(value);
	      },
	      postal: function(el,value){
	        return /^((\d{5}-\d{4})|(\d{5})|([a-z]\d[a-z]\s?\d[a-z]\d))$/i.test(value);
	      },
	      date: function(el,value){
	        return /^(((((0[13578])|([13578])|(1[02]))[\-\/\s]?((0[1-9])|([1-9])|([1-2][0-9])|(3[01])))|((([469])|(11))[\-\/\s]?((0[1-9])|([1-9])|([1-2][0-9])|(30)))|((02|2)[\-\/\s]?((0[1-9])|([1-9])|([1-2][0-9]))))[\-\/\s]?\d{4})(\s(((0[1-9])|([1-9])|(1[0-2]))\:([0-5][0-9])((\s)|(\:([0-5][0-9])\s))([am|pm]{2,2})))?$/i.test(value);
	      },
	      regexp: function(el,value,params){
	        return new RegExp(params.regex).test(value);
	      },
	      numeric: function(el,value){
	        return /[^0-9]/i.text(value);
	      },
	      alphanumeric: function(el,value){
	        return /[^a-z0-9]/i.text(value);
	      },
	      alpha: function(el,value){
	        return /[^a-z]/i.text(value);
	      },
	      alnumhyphen: function(el,value){
	        return /[^a-z0-9\-_]/i.text(value);
	      },
	      nosel: function(el,value,params){
          return (el.selectedIndex!=params.index);
	      }
	    }
	    
	    var val = function(frm){
	      var b_err = false;
	      $.each(getelements(frm),function(){
	        var el = this;
          var meta = getmeta(this);
          var b_ok = true;
          var str_msg = meta.message||meta.msg||'Unable to validate [{0}]';
          if(meta.val){
            if(typeof meta.val=='string') meta.val=[meta.val];
            $.each(meta.val,function(i,method){
              var fn = methods[method]||eval(method)||null;
              if(fn) b_ok = fn(el,el.value,meta.params||{},frm);
              else b_ok = false;
              if(!b_ok) return false;
            });
          }
          if(!b_ok) {
            b_err = true;
            alert(str_msg.replace('{0}',el.name));
            $(this).focus();
            return false;
          }
	      });
	      return !b_err; 
	    }
     
      return this.each(function(){
        $(this).bind("submit",function(){
          var b_ok = val(this);
          /*
          if (formRules.length == 0 || performCheck(this.id, formRules,'jsVar')){
            return ((typeof config.onOk == "function")?config.onOk(this):true);
          }else{
            showErrors(this);
            return ((typeof config.onError == "function")?config.onError(this):false);
          }
          */
          return b_ok;
        });
      });
    }
  });
  $(document).ready(function(){ $('form.validate').validate(); });
})(jQuery);