function action(x){

var sets = 4;

for(y = 1; y < (sets + 1); y ++) {

	document.getElementById('cont_' + y).style.display = "none";

}

document.getElementById('cont_' + x).style.display = "block";

}



/*

function action1(){

document.getElementById("menu2").style.display = "none";

document.getElementById("menu").style.display = "block";

}

function action2(){

document.getElementById("menu2").style.display = "block";

document.getElementById("menu").style.display = "none";

}



function action(x){

var sets = 5;

for(y = 1; y < (sets + 1); y ++) {

                document.getElementById('cont_' + y).style.display = (y==x) ? "block" : "none";

                document.getElementById('cLink_' + y).style.borderColor = (y==x) ? "#666666" : "#DFDFDF";

}

}

*/