/* Version 1.9.1 of the NovelProjects Modal Popup
 * Author: Chris Keenan
 * Author: Nathan Wilkinson
 * Website: http://www.novelprojects.com/ */
  
(function($){   
  var c0;
  var c;
  
  var o = 
  {
    containerTarget: '#modalTarget',
    targetClass: '.npContent',
    overlayClass: '.npOverlay',
    closeClass: '.npClose',      
    dragClass: '.npTitle', 
    enableOverlayClose: false,
    enableEscape: true,
    title: false, // set to a string value to be the modal windows title   
    enableDrag: false, // if true, you must include jquery ui core, and jquery ui drag
    isModal: true, // if false, no overlay is displayed and you can still interact with the page
    animate: false, // when set to true, animations will fire
    ajax: false, // set to a path as a string of your requested page
    toTop: false, // always positions modal 15% from top of inner browser height
    destroyOverlay: true,
    toggleHide: true,
    sender: null,
    overlay: 50, // percentage of opacity for overlay
    width: '620px',
    height: 'auto'
  };
  
  $.fn.npModal = function(params) {
    return this.each(function() {   
      $.npModal(params);
    });
  };  
  
  $.npModalDestroy = function() {
		$.npModalDestroy(null);
	};
  // Remove the modal from DOM
	$.npModalDestroy = function(params) {
		if(params!=null)
		{
		  c = (params.containerTarget!=null && params.containerTarget!=o.containerTarget) ? c = params.containerTarget : o.containerTarget;
		  
		  alert(c)
		  
		  o.destroyOverlay = (params.destroyOverlay!=null && params.destroyOverlay) ? params.destroyOverlay : true;
    }
		
		destroyModal();
	};
  
  $.npModal = function(params)
  {
    c0 = "";
    c = "";
        
    o = jQuery.extend(o, params);
    c = o.containerTarget;
        
    var zIndex = 3000;
    var ov = $('<div></div>').css({height:'100%',width:'100%',position:'fixed',left:0,top:0,'z-index':zIndex-1,opacity:o.overlay/100 });
        
    if($(':has('+o.overlayClass+')').length==0)
      ov.addClass(o.overlayClass.substring(1,o.overlayClass.length)).prependTo('body');
    
    $(c).css({width:o.width,height:o.height,'z-index':zIndex}).appendTo('form');
        
    var cw = parseInt($(c).width(),10);
    var ch = parseInt($(c).height(),10);
    
    if($.browser.msie&&($.browser.version == "6.0")){
      $('html,body').css({height:'100%',width:'100%','z-index':zIndex-1});      
      ov=ov.css({position:'absolute'});
      var pt = parseInt($(c).css('padding-top').replace('px',''), 10);
      var pb = parseInt($(c).css('padding-bottom').replace('px',''), 10);
      var pl = parseInt($(c).css('padding-left').replace('px',''), 10);
      var pr = parseInt($(c).css('padding-right').replace('px',''), 10);            
            
      var ifr = $('<iframe></iframe>').css({opacity:0,width:cw+pl+pr+'px',height:ch+pt+pb+'px',left:0,top:0,'z-index':'-1',position:'absolute'});
      $(c).prepend(ifr);   
    }
    
    //Get Window Height and position in middle
    var top = 0;    
    var h = getHeight();
    var s = getScroll();
        
    if(o.toTop) top = '15%'; else top = (s==0) ? ((h-ch) / 2): (((h-ch) / 2) + s);    
    $(c).css("top", top);
    
    //Get Window Width and position in middle
    var left = 0;    
    var w = getWidth();
    left = ((w-cw) / 2);
    $(c).css("left", left);
 
    if(o.enableDrag){ try{$(c).draggable({handle: o.dragClass}); $(o.dragClass).css({cursor:"move"})}catch(err){/*alert('Draggable Import Needed')*/}}
        
    if(o.isModal) $(o.overlayClass).css("display","block");
    else $(o.overlayClass).css("display","none");
    
    if(o.animate && !$.browser.msie)
      $(c).fadeIn(); 
    else
      $(c).show();
    
    if (o.title!=false)
		$(c + ' ' + o.dragClass + " h1").text(o.title);
    
    if(o.ajax!=false)
    {
      $.ajax({
        type:"GET",
        url:o.ajax,
        success:function(data, textStatus){
          $(c+' '+o.targetClass).html(data);
          
          if (o.animate && !$.browser.msie)
            $(c).slideDown(); 
          else
            $(c).show();
        },
        error:function(XMLHttpRequest, textStatus, errorThrown){
          alert('Error Loading \'' + o.ajax + '\'');
        }
      });
    }
    else
    {
      if(o.animate && !$.browser.msie)
        $(c).fadeIn();
      else
        $(c).show();
    }
    
    if(o.sender!=null)
    {
      c0 = o.sender;
      if(o.toggleHide) $(c0).hide();
    }
    else
      c0 = c;
    
    // Destroy the Modal Window
    $(c + ' ' + o.closeClass).click(destroyModal);
    
    // keydown of escape key closes the modal
    if(o.enableEscape) $(document).keydown(keyHandler);    
    if(o.isModal && o.enableOverlayClose) $(o.overlayClass).click(function(){destroyModal();});
  }

  function destroyModal(e) 
  {
    if(o.isModal && o.destroyOverlay) $(o.overlayClass).css("display","none");
    
    if(o.animate && !$.browser.msie)
      $(c).fadeOut();
    else
      $(c).hide();
    
    if(c0!=c && o.toggleHide)
    {
      c = o.containerTarget = c0;
      o.destroyOverlay = true;
      o.sender = null;
      
      if(o.animate && !$.browser.msie)
        $(c0).fadeIn();
      else
        $(c0).show();
    }
  }
  
  function keyHandler(e) 
  {
		if (e.keyCode == 27) destroyModal();
  }
  
  function getHeight() {
    var h = 0;
    if( typeof( window.innerHeight ) == 'number' ) {
      h = window.innerHeight;
    } else if( document.documentElement && document.documentElement.clientHeight ) {
      h = document.documentElement.clientHeight;
    } else if( document.body && document.body.clientHeight ) {
      h = document.body.clientHeight;
    }
    return h;
  }

  function getWidth() {
    var w = 0;
    if( typeof( window.innerWidth ) == 'number' ) {
      w = window.innerWidth;
    } else if( document.documentElement && document.documentElement.clientWidth ) {
      w = document.documentElement.clientWidth;
    } else if( document.body && document.body.clientWidth ) {
      w = document.body.clientWidth;
    }
    return w;
  }

  function getScroll() {
    var s = 0;
    if( typeof( window.pageYOffset ) == 'number' ) {
      s = window.pageYOffset;
    } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
      s = document.body.scrollTop;
    } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
      s = document.documentElement.scrollTop;
    }
    return s;
  }
})(jQuery);