function showLayer(layerID){

    if (document.layers){
        document.layers[layerID].visibility="show";

    } else if (document.all){
        document.all[layerID].style.visibility="visible";

    } else {
        document.getElementById(layerID).style.visibility="visible";
    }
}

function hideLayer(layerID){

    if(document.layers){
        document.layers[layerID].visibility="hide";

    } else if (document.all){
        document.all[layerID].style.visibility="hidden";

    } else {
        document.getElementById(layerID).style.visibility="hidden";
    }
}

function shade(obj){
    obj.style.color="#008688";
//    obj.style.background="#7BAACB";

}


function unshade(obj){
//    obj.style.background="#CDE4F5";
    obj.style.color="#727272";

}


function shadeKat(obj){
    obj.style.color="#727272";
//    obj.style.background="#7BAACB";

}

function unshadeKat(obj){
//    obj.style.background="#CDE4F5";
    obj.style.color="#727272";

}
 function display(elem)
	     {
                for(var i=1;i<=4;i++)
                {
                  for(var a=1;a<=16;a++)
                  {
                   var edit="id"+i+"_"+a;
                   
                    if((i==1)&&(a<=6))
                      {
                        document.getElementById(edit).style.display="none";
                      }
                     if((i==2)&&(a<=16))
                      {
                        document.getElementById(edit).style.display="none";
                      }
                     if((i==3)&&(a<=8))
                      {
                        document.getElementById(edit).style.display="none";
                      }
                     if((i==4)&&(a<=1))
                      {
                        document.getElementById(edit).style.display="none";
                      }

                   }
                }
                if (elem.style.display != "block"){
		    elem.style.display = "block";

                }
                else {
                    elem.style.display = "none";

                }

            }