function doEnter(event,clickHandler)

{ 	

    NS4 = (document.layers) ? true : false;

	var code = 0;	

	if (NS4)

		code = event.which;

	else

		code = event.keyCode;

	if (code==13) 

	{

		clickObj = document.getElementById(clickHandler);

		if (clickObj) clickObj.click();

		return(false);

	}

}