function rollme(_id_,_overout_)
{ 
document.getElementById(_id_).src='images/'+_id_+_overout_+'.png';


if(_id_=='menu_home')
		    {
		    document.getElementById('home_logo').src='img/home_logo.gif';
		    document.getElementById('smb_logo').src='img/smb_logo_off.gif';
		    document.getElementById('ent_logo').src='img/ent_logo_off.gif';
		    }

if(_id_=='menu_smb')
		    {
		    document.getElementById('home_logo').src='img/home_logo_off.gif';
		    document.getElementById('smb_logo').src='img/smb_logo.gif';
		    document.getElementById('ent_logo').src='img/ent_logo_off.gif';
		    }

if(_id_=='menu_ent')
		    {
		    document.getElementById('home_logo').src='img/home_logo_off.gif';
		    document.getElementById('smb_logo').src='img/smb_logo_off.gif';
		    document.getElementById('ent_logo').src='img/ent_logo.gif';
		    }

}