// Get Element By Id
function getElement(elementId) {
   var elemento;
   if(document.getElementById) {

    	elemento = document.getElementById(elementId);

    } else {

    	elemento = document.all[elementId];
    }

   return elemento;
  }

// Show & Hide Visibility
function show (elementId) {

		    getElement(elementId).style.visibility = 'visible';
}

function hide (elementId) {

		    getElement(elementId).style.visibility = 'hidden';
}

// Set HTML on tag id
function setHTML(tagId, htmlContent) {

	getElement(tagId).innerHTML = htmlContent;
}

// Displays random html
function displayRandomSponsor(webServiceUrl, responseTagId, frequencyChosen, decayChosen) {

	new Ajax.PeriodicalUpdater(responseTagId, webServiceUrl,
	  {
	    method: 'post',
	    frequency: frequencyChosen,
	    decay: decayChosen
	  });

};