/* TOOLTIPS */

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function prepareInputsForHints() {
	var inputs = document.getElementsByTagName("input");
	for (var i=0; i<inputs.length; i++){
		// test to see if the hint span exists first
		if (inputs[i].parentNode.getElementsByTagName("span")[0]) {
			// the span exists!  on focus, show the hint
			inputs[i].onfocus = function () {
				object = this.parentNode.getElementsByTagName("span")[0];
				Effect.Appear(object, {duration: 0.3});
			}
			// when the cursor moves away from the field, hide the hint
			inputs[i].onblur = function () {
				object = this.parentNode.getElementsByTagName("span")[0];
				Effect.Fade(object, {duration: 0.3});
			}
		}
	}
	// repeat the same tests as above for selects
	var selects = document.getElementsByTagName("select");
	for (var k=0; k<selects.length; k++){
		if (selects[k].parentNode.getElementsByTagName("span")[0]) {
			selects[k].onfocus = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
			}
			selects[k].onblur = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "none";
			}
		}
	}
	// repeat the same tests as above for abbrs
	var abbrs = document.getElementsByTagName("abbr");
	for (var l=0; l<abbrs.length; l++){
		if (abbrs[l].parentNode.getElementsByTagName("span")[0]) {
			abbrs[l].onmouseover = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
			}
			abbrs[l].onmouseout = function () {
				this.parentNode.getElementsByTagName("span")[0].style.display = "none";
			}
		}
	}
}