/* Specifies the period of time between updates:

    month - once a month

    date - once per every day of the month (repeats the next month)

    weekday - once per every day of the week (repeats the next week)

    hour - once per hour (repeats the next day)

    request - once per browser request (default)

*/



var updatePeriods = new Array("month","date","weekday","hour","request")



// Invoked to display rotated HTML content in a Web page. The period

// argument should be an element of the updatePeriods array.



function displayRotatedContent(period) {

 var updatePeriod = -1

 for(var i=0;i<content.length;++i) {

  if(period.toLowerCase() == updatePeriods[i].toLowerCase()) {

   updatePeriod = i

   break

  }

 }

 var s = selectHTML(updatePeriod)

 document.write(s)

}



function selectHTML(updatePeriod) {

 var n = 0

 var max = content.length

 var d = new Date()

 switch(updatePeriod) {

  case 0: // Month (0 - 11)

   n = d.getMonth()

   break

  case 1: // Date (1 - 31 scaled to 0 - 30)

   n = d.getDate() - 1

   break

  case 2: // Weekday (0 - 6)

   n = d.getDay()

   break

  case 3: // Hour (0 - 23)

   n = d.getHours()

   break

  case 4: // Request (Default)

  default:

   n = selectRandom(max)

 }

 n %= max 

 return content[n]

}



// Select a random integer that is between 0 (inclusive) and max (exclusive)

function selectRandom(max) {

 var r = Math.random()

 r *= max

 r = parseInt(r)

 if(isNaN(r)) r = 0

 else r %= max

 return r

}