function std() {

document.getElementById("std").style.display = 'block';
document.getElementById("adv").style.display = 'none';
document.getElementById("req").style.display = 'none';
document.getElementById("feat").style.display = 'none';
document.getElementById("celladv").style.backgroundColor = "#FEFFE1";
document.getElementById("cellstd").style.backgroundColor = "#EDECFF";
document.getElementById("cellreq").style.backgroundColor = "#FEFFE1";
document.getElementById("cellfeat").style.backgroundColor = "#FEFFE1";
document.getElementById("cellstd").className = "borderright";
document.getElementById("celladv").className = "borderbottom";
document.getElementById("cellreq").className = "borderbottom";
document.getElementById("cellfeat").className = "borderbottom";
  
    }
	
	    function adv() {
	  
document.getElementById("adv").style.display = 'block';
document.getElementById("std").style.display = 'none';
document.getElementById("req").style.display = 'none';
document.getElementById("feat").style.display = 'none';
document.getElementById("celladv").style.backgroundColor = "#EDECFF";
document.getElementById("cellstd").style.backgroundColor = "#FEFFE1";
document.getElementById("cellreq").style.backgroundColor = "#FEFFE1";
document.getElementById("cellfeat").style.backgroundColor = "#FEFFE1";
document.getElementById("cellstd").className = "borderbottom";
document.getElementById("celladv").className = "borderleftright";
document.getElementById("cellreq").className = "borderbottom";
document.getElementById("cellfeat").className = "borderbottom";

    }
	
	    function req() {

document.getElementById("std").style.display = 'none';
document.getElementById("adv").style.display = 'none';
document.getElementById("req").style.display = 'block';
document.getElementById("feat").style.display = 'none';
document.getElementById("celladv").style.backgroundColor = "#FEFFE1";
document.getElementById("cellstd").style.backgroundColor = "#FEFFE1";
document.getElementById("cellreq").style.backgroundColor = "#EDECFF";
document.getElementById("cellfeat").style.backgroundColor = "#FEFFE1";
document.getElementById("cellstd").className = "borderbottom";
document.getElementById("celladv").className = "borderbottom";
document.getElementById("cellreq").className = "borderleftright";
document.getElementById("cellfeat").className = "borderbottom";
  
    }
	
		    function feat() {

document.getElementById("std").style.display = 'none';
document.getElementById("adv").style.display = 'none';
document.getElementById("req").style.display = 'none';
document.getElementById("feat").style.display = 'block';
document.getElementById("celladv").style.backgroundColor = "#FEFFE1";
document.getElementById("cellstd").style.backgroundColor = "#FEFFE1";
document.getElementById("cellreq").style.backgroundColor = "#FEFFE1";
document.getElementById("cellfeat").style.backgroundColor = "#EDECFF";
document.getElementById("cellstd").className = "borderbottom";
document.getElementById("celladv").className = "borderbottom";
document.getElementById("cellreq").className = "borderbottom";
document.getElementById("cellfeat").className = "borderleftright";
  
    }

function dl()
{
document.getElementById("dl").style.display = 'block';
}

function dlclose()
{
document.getElementById("dl").style.display = 'none';
}

function ld()

{
document.getElementById("ld").style.display = 'block';
}

function ldclose()
{
document.getElementById("ld").style.display = 'none';
}