function checkCR(evt) {
	var evt  = (evt) ? evt : ((event) ? event : null);
	var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
	if ((evt.keyCode == 13) && (node.type=="text")) {
		if(document.getElementById('searchbox')){
			doSearch();
			return false}
		else
			return false;
	}
}

function doSearch(){
	var sb = document.getElementById('searchbox'); 
	if(sb.value == '' || sb.value == 'Search ...'){
		alert('Please enter a search query ...');
		return false;}
	else 
		location.replace('/thcohome.nsf/pages/search?OpenDocument&q=' + sb.value);
}

document.onkeypress = checkCR;

function flip(o, i){
	o.className = i;
}