function blurit() {  
	// blur <a
	lnks = document.getElementsByTagName('a');
	for (i = 0; i < lnks.length; i++) {
		lnks[i].onfocus = new Function("this.blur()");
		// build external target
		if (lnks[i].className.match(/external/)) {
      lnks[i].target = '_blank';
    }
	}
	// blur <area
	lnks = document.getElementsByTagName('area');
	for (i = 0; i < lnks.length; i++) {
		lnks[i].onfocus = new Function("this.blur()");
	}
}

function changeStyle(id, property) {
   document.getElementById(id).className = property;
}
function show(id) {
  document.getElementById(id).style.display = "block";
}
function hide(id) {
  document.getElementById(id).style.display = "none";
}