function popUp(unit) {
  page = "stackable.html?" + unit;
  title = unit + "stacking";
  myWindow = window.open(page,title,"toolbar=0, location=0,directories=0,status=0,menubar=0,scrollbars=0,copy history=0,width=450,height=230");
}

function showBig(unit) {
  title = unit + "enlargement";
  page = "larger.html?" + unit;
  myWindow = window.open(page,title,"toolbar=0, location=0,directories=0,status=0,menubar=0,scrollbars=0,copy history=0,width=400,height=520");
}

function callFlash() {
  page = "product_flash.html";
  myWindow = window.open(page,"Flash","toolbar=0, location=0,directories=0,status=0,menubar=0,scrollbars=0,copy history=0,width=650,height=520");
}

function diagram(unit) {
  page = "diagram.html?" + unit;
  title = unit + "diagram";
  myWindow = window.open(page,title,"toolbar=0, location=0,directories=0,status=0,menubar=0,scrollbars=1,copy history=0,width=400,height=520,resizable=1");
}