var excluded=['and','about','or'];

function validateForm(f){
	var cleanQuery=f.query.value;

	for(var i=0;i<excluded.length;i++){
		cleanQuery=eval('cleanQuery.replace(/^'+excluded[i]+' /gi,"")');
		cleanQuery=eval('cleanQuery.replace(/ '+excluded[i]+'$/gi,"")');
		cleanQuery=eval('cleanQuery.replace(/ '+excluded[i]+' /gi," ")');
	}

	// Trim spaces from start and end of query
	cleanQuery = cleanQuery.replace(/^\s*|\s*$/g,"");
	
	if( cleanQuery.length == 0 ){
		alert("Please enter search text."+cleanQuery);
		return false;
	}

	f.query.value=cleanQuery;
	return true;
}