var clicktimer;
var e_click;
var id_click;
 
$(/* Your Sender */).click(function(ev)
{
    var browser=navigator.appName;
    var b_version=navigator.appVersion;
    var version=parseFloat(b_version);
 
    if((browser=="Microsoft Internet Explorer")
       && (version==6))
    {
        //Just do the primary action
    }
    else
    {
        e_click = ev;
        id_click = this.id;
        clicktimer = window.setTimeout(
            "if(e_click)
            {
                SingleClickAction();
                clearTimeout(clicktimer);
                clicktimer = null;
            }", 300);
    }
}).dblclick(function(ev)
{        
    window.clearTimeout(clicktimer);        
    e_click = null;
    id_click = null;
    DoubleClickAction();    
});
 
function SingleClickAction()
{
   //Do Something
}
function DoubleClickAction()
{
   //Do Something
}