function getElement(id) {
    if (window.navigator.userAgent.toLowerCase().match("gecko"))
      return(document.getElementById(id));
    else if (document.layers)
      return(document.layers[id]);
    else if (document.all)
      return(document.all[id]);
    else
      return(document.getElementById(id));
  }
  

/* tabNav */

/* globals */
var openTabId = "tab1";
var openAId = "a1";
var openLiId = "li1";

function showTab(id) {

	var newTabId = "tab"+id;
	var newAId = "a"+id;
	var newLiId = "li"+id;

	/* do not open the one that is already open */
	if(openTabId != newTabId) {
	    
		/* close */
		var openTab = getElement(openTabId);
		var openA = getElement(openAId);
		var openLi = getElement(openLiId);
		
		openTab.style.display = "none";
	    openA.className = "";
		openLi.className = "";
		
		/* open */
		var newTab = getElement(newTabId);
		var newA = getElement(newAId);
		var newLi = getElement(newLiId);
		
		newTab.style.display = "block";
	    newA.className = "tabOpen";
		newLi.className = "tabOpen";
	    
		/* update globals */
		openTabId = newTabId;
		openAId = newAId;
		openLiId = newLiId;
	}

}

/* site search */

function really_empty(element) {
	element.value = '';
	element.onclick = null;
}

function really_switchDivs(idToOpen, idToClose) {
	//alert(idToOpen);
	document.getElementById(idToClose).style.display="none";
	document.getElementById(idToOpen).style.display="block";
}