function contsPreloader() {
     var i = 0;
     imageObj = new Image();
 
     images = new Array();
     images[0]="img/cont_africa.jpg";
     images[1]="img/cont_europe.jpg";
     images[2]="img/cont_northamerica.jpg";
     images[3]="img/cont_southamerica.jpg";
     images[4]="img/cont_asia.jpg";
     images[5]="img/cont_australia.jpg";
 
     for(i=0; i<6; i++) 
     {
          imageObj.src=images[i];
     }
}

function tabsPreloader() {
	var i = 0;
     imageObj = new Image();
 
     images = new Array();
     images[0]="img/tabs_home_s.jpg";
     images[1]="img/tabs_network_s.jpg";
     images[2]="img/tabs_ads_s.jpg";
     images[3]="img/tabs_sites_s.jpg";
     images[4]="img/tabs_account_s.jpg";
 
     for(i=0; i<5; i++) 
     {
          imageObj.src=images[i];
     }
}