function resultados(div1)
{
if (document.getElementById)
{
// this is the way the standards work
var style1 = document.getElementById(div1).style;
if (style1.display == "block") {
style1.display = "none";
}else{
style1.display = "block";
}

}
else if (document.all)
{
// this is the way old msie versions work
var style1 = document.all[div1].style;
if (style1.display == "block") {
style1.display = "none";
}else{
style1.display = "block";
}
}
else if (document.layers)
{
// this is the way nn4 works
var style1 = document.layers[div1].style;
if (style1.display == "block") {
style1.display = "none";
}else{
style1.display = "block";
}
}
}