$(document).ready(function(event){
    $("#divHeaderMenu .icons a").mouseover(function(){
        $(".linkRef").html($(this).attr('alt'));
    });
    $("#divHeaderMenu .icons a").mouseout(function(){
            $(".linkRef").html('');
    });
    $("#searchMain .text").focus(function(){
        $(this).val('');
    });

   $("#searchMain .but").click(function(){
    key = $("#searchMain .text").val();
    if ( key=='' | key=='Search the Network') {
        alert('Please enter keyword');
        $("#searchMain .text").focus();
    }
    else
      $("#searchMain").submit();
    });

});