varLength = 1
var entryContent = new Array(varLength)

entryContent[0] = " <div align=\"center\"><a href=\"http://maps.google.com/\" target=\"_blank\"><img src=\"drivingdirections.gif\" border=\"0\"></a></div>"

var randomNumber = Math.random()
randomNumber *= varLength
randomNumber = parseInt(randomNumber)
if(isNaN(randomNumber)) randomNumber = 0
else randomNumber %= varLength
selectedContent = entryContent[randomNumber]

document.write (selectedContent)