var entry_point = false;
$(function(){
  $.create = function() {
    var ret = [], a = arguments, i, e;
    a = a[0].constructor == Array ? a[0] : a;
    for(i=0; i<a.length; i++) {
      if(a[i+1] && a[i+1].constructor == Object) { 
        // item is element if attributes follow
        e = document.createElement(a[i]);
        // apply attributes
        $(e).attr(a[++i]); 
        // children
        if(a[i+1] && a[i+1].constructor == Array) $(e).append($.create(a[++i])); 
        ret.push(e);
      } else { 
        // item is just a text node
        ret.push(document.createTextNode(a[i]));
      }
    }
    return ret;
  };
  jQuery.fn.maxLength = function(max){  
    this.each(function(){  
           //Get the type of the matched element  
           var type = this.tagName.toLowerCase();  
           //If the type property exists, save it in lower case  
           var inputType = this.type? this.type.toLowerCase() : null;  
           //Check if is a input type=text OR type=password  
           if(type == "input" && inputType == "text" || inputType == "password"){  
               //Apply the standard maxLength  
               this.maxLength = max;  
           }  
           //Check if the element is a textarea  
           else if(type == "textarea"){  
               //Add the key press event  
               this.onkeypress = function(e){  
                   //Get the event object (for IE)  
                   var ob = e || event;  
                   //Get the code of key pressed  
                   var keyCode = ob.keyCode;  
                   //Check if it has a selected text  
                   var hasSelection = document.selection? document.selection.createRange().text.length > 0 : this.selectionStart != this.selectionEnd;  
                   //return false if can't write more  
                   return !(this.value.length >= max && (keyCode > 50 || keyCode == 32 || keyCode == 0 || keyCode == 13) && !ob.ctrlKey && !ob.altKey && !hasSelection);  
               };  
               //Add the key up event  
               this.onkeyup = function(){  
                   //If the keypress fail and allow write more text that required, this event will remove it  
                   if(this.value.length > max){  
                       this.value = this.value.substring(0,max);  
                   }  
               };  
           }  
       });  
   };  
});
function url_clean(url){
  return url.toLowerCase().replace("'", '').replace(/[^-a-z0-9]/g, '-').replace(/--+/g, '-').replace(/^-+|-+$/g, '');
}