function LeftColumnHeight(prefix)
{
  id1=prefix+'_column_1';
  id2=prefix+'_column_2';
  var col1 = document.getElementById(id1);
  var col2 = document.getElementById(id2);
  h1=col1.offsetHeight;
  h2=col2.offsetHeight;
  if (prefix!='gp' & h1<h2) {col1.style.height=(col2.offsetHeight)+'px';}
//  d=150;
//  if (prefix!='gp') {col1.style.height=(document.documentElement.clientHeight-d)+'px';}
}