/* ------------------------------------------------------------- */
/* name:    dhtml.js                                             */
/* purpose: DHTML utility functions                              */
/* ------------------------------------------------------------- */

function toggleDisplay(content) {
  if (document.getElementById) {
    thisContent = document.getElementById(content).style;
    if (thisContent.display == "block") {
      thisContent.display = "none";
    } else {
      thisContent.display = "block";
    }
    return false;
  } else {
    return true;
  }
}

/* ------------------------------------------------------------- */
var oldLayer = "";
function showLayer(thisLayer) {
  if (oldLayer != "") {
    toggleDisplay(oldLayer);
  }
  toggleDisplay(thisLayer);
  oldLayer = thisLayer;
}

/* ------------------------------------------------------------- */
function changeBGcolor(elementID,color) {
	document.getElementById(elementID).style.backgroundColor = color;
}