function jump2form() {
  var form = document.forms["search_form"];
  if (!form) {
  	form = document.search_form;
  }
  if (form) form.q.focus();
}

function isblank(s) {
  for(var i = 0; i < s.length; i++) {
	var c = s.charAt(i);
	if ((c != ' ') && (c != '\n') && (c != '\t')) {
		return false;
	}
  }
  return true;
}

function submitSearch() {
  var form = document.forms["search_form"];
  if (!form) {
    form = document.search_form;
  }
  if (form) {
    var q = form.q.value;
    if ((q == null) || (q == "") || isblank(q)) {
        alert("Please enter a word to look up.");
        jump2form();
        return false;
    }
    form.submit();
    return false;
  }
  return false;
}

function init() {
  var winW = 1024, winH = 768;
  if (parseInt(navigator.appVersion)>3) {
   if (navigator.appName=="Netscape") {
    winW = window.innerWidth;
    winH = window.innerHeight;
   } else if (navigator.appName.indexOf("Microsoft")!=-1) {
    winW = document.body.offsetWidth;
    winH = document.body.offsetHeight;
   }
  }
  if (winW < 1000) {
    var leftAds = document.getElementById("left-ads");
    if (leftAds) {
      leftAds.style.display = "none";
      leftAds.style.visibility = "hidden";
    }
    var rightAds = document.getElementById("right-ads");
    if (winW < 780) {
      if (rightAds) {
        rightAds.style.display = "none";
        rightAds.style.visibility = "hidden";
      }
    }
  }
  if (winH < 500) {
    var midAds1 = document.getElementById("middle-ads1");
    midAds1.style.display = "none";
    midAds1.style.visibility = "hidden";    
    if (winH < 475) {
      var midAds2 = document.getElementById("middle-ads2");
      midAds2.style.display = "none";
      midAds2.style.visibility = "hidden";
    }
  }
}