var a = document.getElementsByTagName('a');
     for (i=0; i<a.length; i++) {var elem = a[i]; elem.parentNode.removeChild(elem);}

var g = document.getElementsByTagName('A');
     for (i=0; i<g.length; i++) {var elem = g[i]; elem.parentNode.removeChild(elem);}

..
 </FORM><A 
..

var anchor;
while ( anchor = document.anchors[0] ) {
    anchor.parentNode && anchor.parentNode.removeChild( anchor );
}

var anchor;
while ( anchor = document.anchors[0] ) {
    *!*anchor.parentNode &&*/!* anchor.parentNode.removeChild( anchor );
}

var a = document.getElementsByTagName('a'), b;

while( b = a[0] )
    b.parentNode.removeChild( b );

var
  nodes = document.getElementsByTagName('a'),
  nodesInd = nodes.length;
while (nodesInd--) {
  nodes[nodesInd].parentNode.removeChild(nodes[nodesInd]);
}