function setbgc(color,id) {
	
	var sid = document.getElementById(id);
	sid.style.backgroundColor = color;

	}
        function showhide(astra) {

                        var obj = document.getElementById(astra);
        
                        if ( obj.style.display == "none" )   
{  obj.style.display="block";  }  else {  obj.style.display="none";  }
                }