function ClickButton(event, focusControl)
{
    event = event || window.event;	
    
    var keyCode = null;

    if( event.which ) 
    {
        keyCode = event.which;
    } 
    else if( event.keyCode )
    {
        keyCode = event.keyCode;
    }
                
    if( 13 == keyCode ) 
    {                
        document.getElementById(focusControl).focus();                    
        return false;
    }
                
    return true;
}

function IsIE()
{
    var agt=navigator.userAgent.toLowerCase();
    
    if (agt.indexOf("msie") != -1)
        return true;
       
    return false;
}