function toggledisplay(id){
show_ans=eval("ANS"+id);
if (show_ans.style.display == 'none') {
show_ans.style.display='block';
}
else {
show_ans.style.display='none';
}
}
function openImageWindow(image_loc,img) {
HTML = "![]("+ image_loc +")
";
popupImage = window.open('','_blank','height=200, width=300,toolbar=no,scrollbars=no,statusbar=no,location=no');
popupImage.document.open();
popupImage.document.write(HTML);
popupImage.document.close();
obj_img = document.getElementById(img);
obj_img.src= obj_img.src;
}
function doNothing() {
}
function blocking(nr)
{
if (document.layers)
{
current = (document.layers[nr].display == 'none') ? 'block' : 'none';
document.layers[nr].display = current;
}
else if (document.all)
{
current = (document.all[nr].style.display == 'none') ? 'block' : 'none';
document.all[nr].style.display = current;
}
else if (document.getElementById)
{
vista = (document.getElementById(nr).style.display == 'none') ? 'block' : 'none';
document.getElementById(nr).style.display = vista;
}
}