// JavaScript Document
var size=14;  
var heightline=22; 
//字体大小
function fontZoom(fontsize){    //设置字体
    size=fontsize;	
	var tabMenus = document.getElementById('ShowContent').getElementsByTagName('li');
	for(var i=0,leng = tabMenus.length;i<leng;i++){
		tabMenus[i].style.fontSize=size+'px';
		tabMenus[i].style.lineHeight=heightline+'px';
	}
}
function fontMax(){    //字体放大
    size=size+2;
	heightline=heightline+2;
	var tabMenus = document.getElementById('ShowContent').getElementsByTagName('li');
	for(var i=0,leng = tabMenus.length;i<leng;i++){
		tabMenus[i].style.fontSize=size+'px';
		tabMenus[i].style.lineHeight=heightline+'px';
	}
}
function fontMin(){    //字体缩小
    size=size-2;
	heightline=heightline-2;
    if (size < 2 ){
        size = 2;
		heightline = 8;
    }
	var tabMenus = document.getElementById('ShowContent').getElementsByTagName('li');
	for(var i=0,leng = tabMenus.length;i<leng;i++){
		tabMenus[i].style.fontSize=size+'px';
		tabMenus[i].style.lineHeight=heightline+'px';
	}
}