//preload images, then onmouseover & mouseout functions

if (document.images)  {
        
  nav_execsummary_1 = new Image; nav_execsummary_1.src = '../img/nav_execsummary_1.gif';
  nav_execsummary_2 = new Image; nav_execsummary_2.src = '../img/nav_execsummary_2.gif';
  
  nav_execsummarynoline_1 = new Image; nav_execsummarynoline_1.src = '../img/nav_execsummarynoline_1.gif';
  nav_execsummarynoline_2 = new Image; nav_execsummarynoline_2.src = '../img/nav_execsummarynoline_2.gif';
  
  nav_casestudies_1 = new Image; nav_casestudies_1.src = '../img/nav_casestudies_1.gif';
  nav_casestudies_2 = new Image; nav_casestudies_2.src = '../img/nav_casestudies_2.gif';
  
  nav_customivr_1 = new Image; nav_customivr_1.src = '../img/nav_customivr_1.gif';
  nav_customivr_2 = new Image; nav_customivr_2.src = '../img/nav_customivr_2.gif';

  nav_ivrexamples_1 = new Image; nav_ivrexamples_1.src = '../img/nav_ivrexamples_1.gif';
  nav_ivrexamples_2 = new Image; nav_ivrexamples_2.src = '../img/nav_ivrexamples_2.gif';
  
  nav_ivrfaq_1 = new Image; nav_ivrfaq_1.src = '../img/nav_ivrfaq_1.gif';
  nav_ivrfaq_2 = new Image; nav_ivrfaq_2.src = '../img/nav_ivrfaq_2.gif';
  
  nav_alertcalls_1 = new Image; nav_alertcalls_1.src = '../img/nav_alertcalls_1.gif';
  nav_alertcalls_2 = new Image; nav_alertcalls_2.src = '../img/nav_alertcalls_2.gif';
  
  nav_hosting_1 = new Image; nav_hosting_1.src = '../img/nav_hosting_1.gif';
  nav_hosting_2 = new Image; nav_hosting_2.src = '../img/nav_hosting_2.gif';

  nav_alertcalls_1 = new Image; nav_alertcalls_1.src = '../img/nav_alertcalls_1.gif';
  nav_alertcalls_2 = new Image; nav_alertcalls_2.src = '../img/nav_alertcalls_2.gif';

}

function rollOverC(name) {
        if (document.images) {
		  //alert( document.images[name].src );
                document.images[name].src = eval('nav_' + name + '_2.src');
        }
}

function rollOffC(name) {
        
        if (document.images) {
                document.images[name].src = eval('nav_' + name + "_1.src");
        }
}