var AWT = {
  /**
   * Shortcut for document.getElementById()
   * @param id
   * @return document node
   */
  e: function(id){return document.getElementById(id);},
  
  /**
   * Shortcut for <node>.getElementsByTagName();
   * @param tagName
   * @param parent
   * @return collection of nodes
   */
  t: function(tagName,parent){
    parent = parent || document;
    return parent.getElementsByTagName(tagName);
  },
  
  /**
   * Extracts style value of the element
   * @param element
   * @param styleAttr
   * @return style value
   */
  s: function(element,styleAttr){
    element = (typeof element == 'object') ? element : AWT.e(element);
    if(element.currentStyle && styleAttr.indexOf('-') > 0){
      var parts = styleAttr.split('-');
      styleAttr = parts[0];
      for(var i = 1; i < parts.length; i++)
        styleAttr += parts[i].substring(0,1).toUpperCase() + parts[i].substring(1);
    }
    return element.currentStyle ? element.currentStyle[styleAttr] : document.defaultView.getComputedStyle(element,null).getPropertyValue(styleAttr);
  },
  
  /**
   * Collects all elements which have CSS class clsName
   * @param clsName
   * @return array of document nodes
   */
  c: function(clsName,parent){
    parent = parent || document;
    var retVal = new Array();
    var elements = parent.getElementsByTagName("*");
    for(var i = 0; i < elements.length; i++){
      if(AWT.cchk(elements[i],clsName))
        retVal.push(elements[i]);
    }
    return retVal;
  },
  
  /**
   * Adds CSS class clsName to the element
   * @param el
   * @param clsName
   */
  cadd: function(el,clsName){
    if(el.className == ''){
      el.className = clsName;
      return;
    }
    else if(S.trim(el.className).indexOf(' ') > 0){
      var classes = el.className.split(' ');
      for(var j = 0;j < classes.length;j++){
        if(classes[j] == clsName)
          return;
      }
    }
    else if(el.className == clsName)
      return;
    el.className += ' ' + clsName;
  },
  
  /**
   * Removes CSS class clsName from the element
   * @param el
   * @param clsName
   */
  crmv: function(el,clsName){
    if(el.className.indexOf(clsName) < 0)
      return;
    else if(el.className == clsName)
      el.className = '';
    else if(S.trim(el.className).indexOf(' ') > 0){
      var classes = el.className.split(' ');
      for(var j = 0;j < classes.length;j++){
        if(classes[j] == clsName){
          classes.splice(j,1);
          break;
        }
      }
      var c = '';
      for(var i = 0; i < classes.length; i++){
        if(c.length > 0) c += ' ';
        c += classes[i];
      }
      el.className = c;
    }
  },
  
  cswp: function(el,crmv,cadd){AWT.crmv(el,crmv); AWT.cadd(el,cadd);},
  
  /**
   * Checks element for CSS class clsName
   * @param el
   * @param clsName
   * @return boolean
   */
  cchk: function(el,clsName){
    if(el.className.indexOf(" ") >= 0){
      var classes = el.className.split(" ");
      for(var j = 0;j < classes.length;j++){
        if(classes[j] == clsName){
          return true;
        }
      }
    }
    else if(el.className == clsName)
      return true;
    return false;
  },
  
  x: function(obj){
    var curleft = 0;
    if(obj.offsetParent){
      while (obj.offsetParent){
        curleft += obj.offsetLeft;
        obj = obj.offsetParent;
      }
    }
    else if(obj.x)
      curleft += obj.x;
    return curleft;
  },
  
  y: function(obj){
    var curtop = 0;
    if(obj.offsetParent){
      while(obj.offsetParent){
        curtop += obj.offsetTop;
        obj = obj.offsetParent;
      }
    }
    else if(obj.y)
      curtop += obj.y;
    return curtop;
  },
  
  pos: function(el){var x = AWT.x(el); var y = AWT.y(el); return {x:x,y:y};},
  

  DOMParent: function(){
    if(document.documentElement)
      return document.documentElement;
    else
      return document.body;
  },

  dim: function(el){
    el = (typeof el == 'object') ? el : AWT.e(el);
    var X = AWT.x(el); var Y = AWT.y(el);
    var mt = parseInt(AWT.s(el,'margin-top')); var mb = parseInt(AWT.s(el,'margin-bottom')); var ml = parseInt(AWT.s(el,'margin-left')); var mr = parseInt(AWT.s(el,'margin-right'));
    mt = isNaN(mt) ? 0 : mt; mr = isNaN(mr) ? 0 : mr; mb = isNaN(mb) ? 0 : mb; ml = isNaN(ml) ? 0 : ml;
    //
    var pt = parseInt(AWT.s(el,'padding-top')); var pb = parseInt(AWT.s(el,'padding-bottom')); var pl = parseInt(AWT.s(el,'padding-left')); var pr = parseInt(AWT.s(el,'padding-right'));
    pt = isNaN(pt) ? 0 : pt; pr = isNaN(pr) ? 0 : pr; pb = isNaN(pb) ? 0 : pb; pl = isNaN(pl) ? 0 : pl;
    //
    var bt = parseInt(AWT.s(el,'border-top-width')); var bb = parseInt(AWT.s(el,'border-bottom-width')); var bl = parseInt(AWT.s(el,'border-left-width')); var br = parseInt(AWT.s(el,'border-right-width'));
    bt = isNaN(bt) ? 0 : bt; br = isNaN(br) ? 0 : br; bb = isNaN(bb) ? 0 : bb; bl = isNaN(bl) ? 0 : bl;
  
    var ie7 = navigator.userAgent.indexOf('MSIE 7') > 0;
    var w = el.offsetWidth > el.clientWidth ? el.offsetWidth : el.clientWidth;
    var h = el.offsetHeight > el.clientHeight ? el.offsetHeight : el.clientHeight;
    if(ie7){
      var cw = w - pl - pr - bl - br; 
      var ch = h - pt - pb - bt - bb; 
    }
    else{
      var cw = w - pl - pr; 
      var ch = h - pt - pb; 
    }
  
    var fw = cw+ml+mr+bl+br+pl+pr;
    var fh = ch+mt+mb+bt+bb+pt+pb;
  
    return {
  	debug:
  		'IE7='+(ie7 ? 'yes':'no')+'<br />\n'+
  		'XY: '+X+'/'+Y+'<br />\n'+
  		'content: '+cw+'x'+ch+'<br />\n'+
  		'client: '+el.clientWidth+'x'+el.clientHeight+'<br />\n'+
  		'offset: '+el.offsetWidth+'x'+el.offsetHeight+'<br />\n'+
  		'scroll: '+el.scrollWidth+'x'+el.scrollHeight+'<br />\n'+
  		'full: '+fw+'x'+fh+'<br />\n'+
  		'margin: '+mt+' '+mr+' '+mb+' '+ml+'<br />\n'+
  		'padding: '+pt+' '+pr+' '+pb+' '+pl+'<br />\n'+
  		'border: '+bt+' '+br+' '+bb+' '+bl+'<br />\n'+
  		'',
  	ie7:ie7,
      X:X,Y:Y,
      margin: {top:mt,right:mr,bottom:mb,left:ml},
      padding: {top:pt,right:pr,bottom:pb,left:pl},
      border: {top:bt,right:br,bottom:bb,left:bl},
      content: {width:cw,height:ch},
      client: {width:el.clientWidth,height:el.clientHeight},
      offset: {width:el.offsetWidth,height:el.offsetHeight},
      scroll: {width:el.scrollWidth,height:el.scrollHeight},
      full: {width:fw,height:fh}
    };
  },
  
  opacity: function(el,x){
    if(typeof el == 'object' && x > 0){
      if(x > 100)
        x = 100;
      if(parseFloat(x) < 1.0)
        x = x * 100;
      el.style.opacity = x/100;
      el.style.filter='alpha(opacity='+x+')';
    }
  },
  
  mpos: function(event){
    var evt = AWT.ev(event);
    var p = {x:0,y:0};
    if(evt.pageX){
      p.x = evt.pageX;
      p.y = evt.pageY;
    }
    else if(evt.clientX){
      p.x = evt.clientX + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
      p.y = evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
    }
    return p;
  },
  
  pin: function(rect,point){
    if(point.x < rect.x || point.x > rect.x + rect.width || point.y < rect.y || point.y > rect.y + rect.height)
      return false;
    return true;
//    if(point.x >= rect.x && point.x <= rect.x + rect.width && point.y >= rect.y && point.y <= rect.y + rect.height)
//      return true;
//    else
//      return false;
  },
  
  ev: function(e){
    if(window.event)
      return window.event;
    else
      return e;
  },
  
  attachEvent: function(handler,func){
    if(document.attachEvent)
      document.attachEvent('on'+handler,func);
    else if(document.addEventListener)
      document.addEventListener(handler,func);
  },

  detachEvent: function(handler,func){
    if(document.attachEvent)
      document.detachEvent(handler,func);
    else if(document.addEventListener){
      document.removeEventListener(handler,func);
    }
  },

  cancelEvent: function(evt){
    if(evt){
      if(evt.preventDefault)
        evt.preventDefault();
      if(evt.stopPropagation)
        evt.stopPropagation();
    }
    if(window.event){
      window.event.cancelBubble = true;
      window.event.returnValue = false;
    }
    return false;
  },
  
  viewport: function(){
    var h = 0, w = 0;
    if(self.innerHeight){
      h = window.innerHeight;
      w = window.innerWidth;
    }
    else{
      if(document.documentElement && document.documentElement.clientHeight){
        h = document.documentElement.clientHeight;
        w = document.documentElement.clientWidth;
      }
      else{
        if(document.body){
          h = document.body.clientHeight;
          w = document.body.clientWidth;
        }
      }
    }
    return{height: parseInt(h,10),width: parseInt(w,10)};
  },
  
  center: function(el){
    var dim = AWT.viewport();
    var left = (dim.width == 0) ? 50 : (dim.width - el.offsetWidth)/2;
    var top = (dim.height == 0) ? 50 : (dim.height - el.offsetHeight)/2;
    if(document.documentElement){
      left += document.documentElement.scrollLeft + document.body.scrollLeft;
      top += document.documentElement.scrollTop + document.body.scrollTop;
    }
    else if(window.scrollX){
      left += window.scrollX;
      top += window.scrollY;
    }
    el.style.left = left + 'px';
    el.style.top = top + 'px';
  },
  
  key: function(e){
    var code = 0;
    if(window.event)
      code = window.event.keyCode;
    else if(e)
      code = e.which;
    return code;
  },
  
  char: function(event){
    if(AWT.ctrl(event))
      return false;
    var c = AWT.key(event);
    if(c == 8)
      return false;
    else if(c == 46)
      return false;
    return true;
  },
  
  ctrl: function(event){
    var c = AWT.key(event);
    if(c==9||(c>=16&&c<=20)||c==27||(c>=33&&c<=45)||(c>=91&&c<=93)||(c>=112&&c<=123)||c==144||c==145)
      return true;
    return false;
  }
};