function fun_focus(objBox)
{
    try
    {
        objBox.style.backgroundImage='none';
    }
    catch(e){}
}
function fun_blur(objBox,boxname)
{
    //background-image:url(img/input_bg_isim.jpg);
    if (objBox.style.backgroundImage=='none')
    {
        if (objBox.value.toString().length == 0)
        {
            try
            {
	            objBox.style.backgroundImage='url(img/input_bg_'+boxname+'.jpg)';
            }
            catch(e){}
        }
    }
}