/* <meta content="charset=UTF-8" /> */


var mwbg = ".mwbg";
var mwbgwrap = ".mwbg .mwbg_wrap";
var paddingLeft = 10;
var paddingRight = 260;//sidebar width + margin
var bWthis = 610;
var minwidth = 880;

(function($){
	$.fn.maxwidthbackground = function(options) {

		// browser Width : bW
		bW = document.documentElement.clientWidth;
		bWL = (bW - bWthis) / 2 + paddingLeft / 2 - paddingRight / 2 + 1;
		bWR = bWL + paddingRight - 1;
		if(bW >= minwidth){
			$(this).css({
				//background: "none",
				marginRight: "-" + bWR + "px",
				marginLeft: "-" + bWL + "px",
				paddingRight: bWR + "px",
				paddingLeft: bWL + "px"
			});
		}
		else {
			$(this).css({
				//background: "#999",
				marginRight: "-320px",
				marginLeft: "-20px",
				paddingRight: "320px",
				paddingLeft: "20px"
			});
		}
		//$("<p id=mwbgsize>" + bW + " , " + bWthis + " , " + bWL + " , " + bWR + "</p>").replaceAll("#mwbgsize");
		//<p id="mwbgsize">test</p>

	};
})(jQuery);

$(document).ready(function(){
    $(mwbg).maxwidthbackground();
});

$(window).resize(function(){
    $(mwbg).maxwidthbackground();
});