jQuery.noConflict();
var grid$ = jQuery;

var COLUMN_MIN = 4;
var COLUMN_WIDTH = 190;
var COLUMN_MARGIN = 10; 

var _offset_x=_offset_y=0;

grid$.grid = {
	init: function() {
		for (module in grid$.grid) {
			if (grid$.grid[module].init)
				grid$.grid[module].init();
		}
	}
};


grid$(document).ready(grid$.grid.init);
grid$.event.add(window, "load", function(){adjust(false);});

grid$.grid.window = {
	init: function() {
		grid$(window)
			.bind('resize', this.resize)
			.each(this.preload);
	},
	preload: function() {
		//cookie = grid$.cookie('ready');
		
		//if(!cookie){
			grid$('body').append('<div id="loading" style="position:absolute;top: 0 ;left:0; margin:0; padding:0; background: #e9e9e9; width:'+grid$(window).width()+'px;height:'+grid$(window).height()+'px;z-index:9999;"></div>');
			//grid$.cookie('ready','true',{expires:30,path:'/'});
			grid$.timer(100,function(timer){
				grid$('#loading').animate({'opacity':0},100,'easeOutCubic',function(){grid$(this).remove();});
			});
		//}
		grid$('#container, #footer').css({'visibility':'visible'});
		
		_offset_y = grid$('#grid').offset().top;
		_offset_x = grid$('#grid').offset().left;
		
		//topics();
		adjust(false);
	},
	resize: function() {
		adjust(true);
	}
	
};

function adjust(mode){

	var _max_y = new Array();
	var _max_h = 0;
	var _max_col = 0;

	var _window_h=grid$(window).height();
	var _window_w=grid$(window).width();

	var _header_w=grid$('#header').outerWidth();
	var _target_w=_window_w-_header_w;
	
	
	var _footer_y=0;
	var columns = Math.max(COLUMN_MIN, parseInt(_target_w / (COLUMN_WIDTH+COLUMN_MARGIN)));
	grid$('#grid div.item').css('width',COLUMN_WIDTH+'px');
	grid$('#grid div.item_double').css('width',(COLUMN_WIDTH*2+COLUMN_MARGIN));
	grid$('#grid div.item_triple').css('width',(COLUMN_WIDTH*3+COLUMN_MARGIN*2));
	grid$('#grid div.item_quad').css('width',(COLUMN_WIDTH*4+COLUMN_MARGIN*3));
	var _auto=Math.floor((_target_w)/(COLUMN_WIDTH+COLUMN_MARGIN));
	_auto=(_auto<8)?8:_auto;
	var _autoW = (COLUMN_WIDTH+COLUMN_MARGIN)*_auto-COLUMN_MARGIN;

	for (x=0;x<columns;x++) _max_y[x] = 0;
	grid$('#grid > div.item').each(function(i) {
		var pos, cursor, width, height= 0;
		var item_x=item_y=0;
		width=(this.className.match(/item_auto/))?_auto:(Math.floor(grid$(this).outerWidth()/COLUMN_WIDTH));
		cursor=0;
		if (width>1) {
			for (x=0;x<columns-(width-1);x++) cursor=(_max_y[x]<_max_y[cursor])?x:cursor;
			pos=cursor;
			for(var x=0; x<width; x++) height=Math.max(height, _max_y[pos+x]);
			for(var x=0; x<width; x++) _max_y[pos+x]=parseInt(grid$(this).outerHeight())+COLUMN_MARGIN+height;
			item_x=pos*(COLUMN_WIDTH+COLUMN_MARGIN);
			item_y=height+_offset_y;
		}else{
			for (x=0;x<columns;x++) cursor=(_max_y[x]<_max_y[cursor])?x:cursor;
			item_x=cursor*(COLUMN_WIDTH+COLUMN_MARGIN);
			item_y=_max_y[cursor]+_offset_y;
			_max_y[cursor] += grid$(this).outerHeight()+COLUMN_MARGIN;
		}
		_max_h=(_max_y[cursor]>_max_h)?_max_y[cursor]:_max_h;
		_footer_y=(_footer_y<_max_h)?_max_h:_footer_y;
		if(!mode){
			grid$(this).css('left', item_x + 'px').css('top',item_y+COLUMN_MARGIN+'px');
			if(this.className.match(/item_auto/)) grid$(this).css('width',_autoW+'px');
		}else{
			grid$(this).stop();
			if(this.className.match(/item_auto/)){
				grid$(this).animate({left: item_x + 'px',top: item_y+COLUMN_MARGIN+'px',width:_autoW+'px'},250,'easeInOutCubic');
			}else{
				grid$(this).animate({left: item_x + 'px',top: item_y+COLUMN_MARGIN+'px'},250,'easeInOutCubic');
			}
		}
		_max_col=(_max_col<cursor)?cursor:_max_col;
	});

	var target_w=columns*(COLUMN_WIDTH+COLUMN_MARGIN)-COLUMN_MARGIN;

	var target_x=(_window_w-((columns+1)*(COLUMN_WIDTH+COLUMN_MARGIN)))/2;
	target_x=(0<target_x)?target_x:0;
	target_x=(-7<target_x)?target_x:0
	offset_x=(0<target_x)?7:0;
	var grid_x=(_window_w-target_w-_header_w-COLUMN_MARGIN)/2;
	grid_x=(0<grid_x)?grid_x:0;

	grid$('#grid').stop();
	grid$('#header').stop();
	grid$('body').stop();
	grid$('#footer').stop();
	var header_x = target_x+target_w+COLUMN_MARGIN+offset_x;
	if(!mode){
		grid$('#grid > div.block').css('width', target_w).css('top',COLUMN_MARGIN);
		grid$('#grid').css('left',grid_x);
		grid$('#header').css('left',header_x);
		grid$('body').css('background-position',header_x);
		grid$('#footer').css('left',grid_x).css('top',_footer_y+100+'px').css('width',columns*COLUMN_WIDTH+COLUMN_MARGIN*1+COLUMN_WIDTH*1+40);
	}else{
		grid$('#grid').animate({left:grid_x+'px'},250,'easeInOutCubic');
		grid$('#grid > div.block').animate({width:target_w+'px'},250,'easeInOutCubic');
		grid$('#header').animate({left: header_x + 'px'},250,'easeInOutCubic');
		grid$('body').animate({backgroundPosition: header_x+'px'+' 0px'},250,'easeInOutCubic')
		grid$('#footer').animate({left:grid_x+'px',top:_footer_y+100+'px',width:columns*COLUMN_WIDTH+COLUMN_MARGIN*1+COLUMN_WIDTH*1+40+'px'},250,'easeInOutCubic');
	}
};