//store the facts in arrays

facts = new Array(9);
facts[0] = "Half of Canadians between ages 40 and 75 have been diagnosed by the dentist or hygienist with gum recession — the major risk factor for root decay.";
facts[1] = "Root decay is caused by a thin film of bacteria which often cannot be brushed or flossed away.";
facts[2] = "The key risk factors for root decay are gum recession and dry mouth.";
facts[3] = "If you take 3 or more prescription drugs each day, you may suffer from dry mouth — a risk factor for root decay.";
facts[4] = "Topical fluoride is not effective in preventing root decay.";
facts[5] = "Root decay is a significant risk factor for a heart attack and heart arrhythmia.";
facts[6] = "In a controlled study of high risk older adults, Prevora reduced root decay by 41% over one year.";
facts[7] = "Less than 2 out of 100 patients receiving Prevora on their teeth experience a short tingling of their gums or tongue — the only observed side effect from this treatment.";
facts[8] = "Prevora does not stain the teeth.";

//calculate a random index
index = Math.floor(Math.random() * facts.length);

//display the fact
document.write("<p>" + facts[index]);
document.write("</p>\n");

//done

//