25){
var linehn = eval(lineheightnum-4);
$("div#readercontainer").css("line-height",linehn+"px");
$("#hang-da").html("t+");
var lineheight = $("div#readercontainer").css("line-height");
var lineheightnum = parseint(lineheight);
if(lineheightnum==22){
$("#hang-xiao").html("t");
}
//添加cookie记录
setcookie("readsetlineheihgt",linehn,30);
}
});
//行间距设置减小
$("#hang-da").click(function(){
var lineheight = $("div#readercontainer").css("line-height");
var lineheightnum = parseint(lineheight);
if(lineheightnum t-");
var lineheight = $("div#readercontainer").css("line-height");
var lineheightnum = parseint(lineheight);
if(lineheightnum==46){
$("#hang-da").html("t");
}