/***********************************************
* Random Content Order script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

function randomizeContent(classname) {
	var contents = randomizeContent.collectElementbyClass(classname);
	contents.text.sort(function() {return 0.5 - Math.random();});
	if (!contents.ref[0]) {
		return;
	}
	var tbodyref = contents.ref[0].tagName=="TR"? contents.ref[0].parentNode : new Object();
	for (var i = 0; i < contents.ref.length; i++) {
		if (tbodyref.moveRow) { //if IE
			tbodyref.moveRow(0, Math.round(Math.random()*(tbodyref.rows.length-1)));
		} else {
			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;
}