function displaycontent(id) {
	if(id != null){
	   	var d = document.getElementById(id).style.display;
		document.getElementById(id).style.display = (d == "none" || d == "") ? "block" : "none";
		if(document.getElementById(id).style.display == "none"){
		   document.getElementById("divopen").style.display = "block";
		}
	}
 }