var arrayName = 'imgs';
var imgs = new Array();


//MAIN NAVIGATION
imgs[0] = new Image();
imgs[0].src = 'i/n/nav_home_0.gif'; 
imgs[1] = new Image();
imgs[1].src = 'i/n/nav_home_1.gif'; 
imgs[2] = new Image();
imgs[2].src = 'i/n/nav_buy_0.gif'; 
imgs[3] = new Image();
imgs[3].src = 'i/n/nav_buy_1.gif'; 
imgs[4] = new Image();
imgs[4].src = 'i/n/nav_sell_0.gif'; 
imgs[5] = new Image();
imgs[5].src = 'i/n/nav_sell_1.gif'; 
imgs[6] = new Image();
imgs[6].src = 'i/n/nav_search_0.gif'; 
imgs[7] = new Image();
imgs[7].src = 'i/n/nav_search_1.gif'; 
imgs[8] = new Image();
imgs[8].src = 'i/n/nav_faq_0.gif'; 
imgs[9] = new Image();
imgs[9].src = 'i/n/nav_faq_1.gif'; 
imgs[10] = new Image();
imgs[10].src = 'i/n/nav_contact_0.gif'; 
imgs[11] = new Image();
imgs[11].src = 'i/n/nav_contact_1.gif'; 

function swap(imgName, arrayPos){
  eval('document.'+imgName+'.src='+arrayName+'['+arrayPos+'].src');
}