function toggleLayerVisibility(whichLayer){
        if (document.getElementById){
            var style2 = document.getElementById(whichLayer).style;
            style2.display = style2.display? "":"block";
            var anchor = document.getElementById(whichLayer+"Link");
            anchor.innerHTML = style2.display? "[ less... ]" : "[ more... ]";
            }
        else if (document.all){
            var style2 = document.all[whichLayer].style;
            style2.display = style2.display? "":"block";
            var anchor = document.getElementById(whichLayer+"Link");
            anchor.innerHTML = style2.display? "[ less... ]" : "[ more... ]";
            }
        else if (document.layers){
            var style2 = document.layers[whichLayer].style;
            style2.display = style2.display? "":"block";
            var anchor = document.getElementById(whichLayer+"Link");
            anchor.innerHTML = style2.display? "[ less... ]" : "[ more... ]";
            }  
    }
    one = "one";
    two = "two";
    three = "three";
    four = "four";
    five = "five";
    six = "six";
    seven = "seven";
    
    
    
    
//write style over-ride    
    document.write("<st" + "y" + "le>");
    document.write("#definitions, .definitions, .definitions H" + "1");
    document.write("{fo" + "nt-si" + "ze: med" + "ium;}");
    document.write(".definitions UL LI H" + "2");
    document.write("{fo" + "nt-si" + "ze: sma" + "ll;}");
    document.write("</st" + "y" + "le>");