随着文本字数的增多，标题背景变长

[my-onlyone]

function GetLength(str) {
  if (str == null) return 0;
  if (typeof str != "string"){
    str += "";
  }
  return str.replace(/[^\x00-\xff]/g,"01").length+4;
}


(function($) {
	$.fn.extend({
        bigTitle: function(options) {
            var settings = $.extend({
                big_text: "",
                big_length: "",
                big_width: 500
            });
            return this.each(function(e) {
                var big_text = $(this).text();
				var big_length = $(this).text().length;
				var big_fontsize = $(this).css("font-size").replace("px","")*1;
				big_length = Math.ceil(GetLength($(this).text())/2);
				alert(big_length);
				var big_width = big_fontsize*big_length+64;
				big_width = (big_width < 500) ? 500 : big_width;
                $(this).html("<div class='big_title_left'><div class='big_title_right' style='width:" + big_width + "px;'><span style='padding-left:45px;padding-right:45px;'>" + big_text + "</span></div></div>").css("width", big_width + "px");
				
            });
        }

    });