function view_Div(MN){
	
    var id_div =  document.getElementById(MN+"_div");
	
	
	if (id_div.style.display=="none") {
		id_div.style.display = "block";
		id_div.style.visibility = "visible";
	}
	else if(id_div.style.display=="block"){
			id_div.style.display = "none";
			id_div.style.visibility = "hidden";
	}
	
}