arr = new Array(
["<span>Each and every school day, 46 children, or more than two full classrooms of kids, are diagnosed with cancer in the United States alone.</span>"],
["<span>Cancer remains the number one disease killer of America's children - more than Cystic Fibrosis, Muscular Dystrophy, Asthma and AIDS combined.</span>"],
["<span>Brain tumors are the leading cause of cancer death from childhood cancer.</span>"],
["<span>September is Childhood Cancer Awareness Month.</span>"],
["<span>Gold is the color for Childhood Cancer Awareness.</span>"],
["<span>Seven children die everyday from cancer.</span>"],
["<span>One in 300 children will develop cancer by age 20.</span"]
// no comma at the end of last index 
);

var lasturl="0"; 
function completeimage(){   var randNum = getRand();
document.getElementById("arr").innerHTML = arr[randNum][0]; 
setTimeout('completeimage()',8000);  }  
function getRand () {   var rnum;   
var id=Math.round(Math.random()*(arr.length-1));  
 rnum = id;   if (rnum==lasturl) { rnum = getRand(); }   
lasturl=rnum;   return rnum;  }