function isValidEmail(data){
	validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
	strEmail = data;

	// search email text for regular exp matches
	if (strEmail.search(validRegExp) == -1) {
		return false;
	}
	return true;
}

function toggleBox(szDivID, iState) { // 1 visible, 0 hidden
	if(document.layers) { //NN4+
		document.layers[szDivID].visibility = iState ? "show" : "hide";
	} else if(document.getElementById) { //gecko(NN6) + IE 5+
		var obj = document.getElementById(szDivID);
		obj.style.visibility = iState ? "visible" : "hidden";
	} else if(document.all) { // IE 4
		document.all[szDivID].style.visibility = iState ? "visible" : "hidden";
	}
}

startList = function() {
   if (document.all&&document.getElementById) {
      navRoot = document.getElementById("nav");
      for (i=0; i<navRoot.childNodes.length; i++) {
         node = navRoot.childNodes[i];
         if (node.nodeName=="LI") {
            node.onmouseover=function() {
               this.className+=" over";
            }
            node.onmouseout=function() {
               this.className=this.className.replace(" over", "");
            }
         }
      }
   }
}
window.onload=startList;