function randomizeContent(classname){

var contents=randomizeContent.collectElementbyClass(classname)

contents.text.sort(function() {return 0.5 - Math.random();})

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

contents.ref[i].innerHTML=contents.text[i]

contents.ref[i].style.visibility="visible"

}

}



randomizeContent.collectElementbyClass=function(classname){ //return two arrays containing elements with specified classname, plus their innerHTML content

var classnameRE=new RegExp("(^|\\s+)"+classname+"($|\\s+)", "i") //regular expression to screen for classname within element

var contentobj=new Object()

contentobj.ref=new Array() //array containing references to the participating contents

contentobj.text=new Array() //array containing participating contents' contents (innerHTML property)

var alltags=document.all? document.all : document.getElementsByTagName("*")

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

if (typeof alltags[i].className=="string" && alltags[i].className.search(classnameRE)!=-1){

contentobj.ref[contentobj.ref.length]=alltags[i]

contentobj.text[contentobj.text.length]=alltags[i].innerHTML

}

}

return contentobj

}