// JavaScript Document
function tab(){
	var labels=document.getElementById("tab").getElementsByTagName("li");
	var part_1=document.getElementById("part_1");
	var part_2=document.getElementById("part_2");
	var part_3=document.getElementById("part_3");
	labels[0].onclick=function(){
		this.className="sel";
		labels[1].className="";
		labels[2].className="margin";
		part_1.className="show";
		part_2.className="hide";
		part_3.className="hide";
	}
	labels[1].onclick=function(){
		this.className="sel";
		labels[0].className="";
		labels[2].className="margin";
		part_1.className="hide";
		part_2.className="show";
		part_3.className="hide";
	}
	labels[2].onclick=function(){
		this.className="sel margin";
		labels[0].className="";
		labels[1].className="";
		part_1.className="hide";
		part_2.className="hide";
		part_3.className="show";
	}
}
function tab_buy(){
	var labels_buy=document.getElementById("tab_buy").getElementsByTagName("li");
	var part_11=document.getElementById("part_11");
	var part_22=document.getElementById("part_22");
	labels_buy[0].onclick=function(){
		this.className="sel";
		labels_buy[1].className="margin";
		part_11.className="show";
		part_22.className="hide";
	}
	labels_buy[1].onclick=function(){
		this.className="sel margin";
		labels_buy[0].className="";
		part_11.className="hide";
		part_22.className="show";
	}
}

function tab_download(){
	var labels_download=document.getElementById("tab_download").getElementsByTagName("li");
	var part_1=document.getElementById("part_1");
	var part_2=document.getElementById("part_2");
	var part_3=document.getElementById("part_3");
	labels_download[0].firstChild.onclick=function(){
		this.className="sel";
		labels_download[1].firstChild.className="";
		labels_download[2].firstChild.className="";
		part_1.className="show";
		part_2.className="hide";
		part_3.className="hide";
	}
	labels_download[1].firstChild.onclick=function(){
		labels_download[0].firstChild.className="";
		this.className="sel";
		labels_download[2].firstChild.className="";
		part_1.className="hide";
		part_2.className="show";
		part_3.className="hide";		
	}
	labels_download[2].firstChild.onclick=function(){
		labels_download[0].firstChild.className="";
		labels_download[1].firstChild.className="";
		this.className="sel";
		part_1.className="hide";
		part_2.className="hide";
		part_3.className="show";		
	}
}