// JavaScript Document
	function seo(){
		document.getElementById("d1").style.display = "block";
		document.getElementById("d2").style.display = "none";
		document.getElementById("d3").style.display = "none";
		document.getElementById("d4").style.display = "none";
	}
	function plugin(){
		document.getElementById("d1").style.display = "none";
		document.getElementById("d2").style.display = "block";
		document.getElementById("d3").style.display = "none";
		document.getElementById("d4").style.display = "none";
	}
	function data(){
		document.getElementById("d1").style.display = "none";
		document.getElementById("d2").style.display = "none";
		document.getElementById("d3").style.display = "block";
		document.getElementById("d4").style.display = "none";
	}
	function design(){
		document.getElementById("d1").style.display = "none";
		document.getElementById("d2").style.display = "none";
		document.getElementById("d3").style.display = "none";
		document.getElementById("d4").style.display = "block";
	}