function displayRecommend1() {
	    document.getElementById("recommendcontent").style.display = "block";
		document.getElementById("recommendcontent1").style.display = "block";
		document.getElementById("recommendcontent2").style.display = "none";
		document.getElementById("suppliercontent").style.display = "none";
		document.getElementById("recommendtab1").className="tab";
	    document.getElementById("recommendtab2").className="tabb";

	}
	function displayRecommend2() {
		document.getElementById("recommendcontent").style.display = "block";
		document.getElementById("recommendcontent1").style.display = "none";
		document.getElementById("recommendcontent2").style.display = "block";
		document.getElementById("suppliercontent").style.display = "none";
		document.getElementById("recommendtab1").className="tabb";
	    document.getElementById("recommendtab2").className="tab";
	}
	function displaySupplier() {
		document.getElementById("suppliercontent").style.display = "block";
		document.getElementById("recommendcontent").style.display = "none";
		document.getElementById("recommendtab1").className="tabb";
	    document.getElementById("recommendtab2").className="tabb";
	}