function showhide() {
if(gMediaPopup != null)
 {
  gMediaPopup.style.display = "none";
 }
 
 
	var elementsArray = new Array();
	var tempObj;
	var i = 1;
	var loopCheck = true;
	var text = document.getElementById("showTxt");
	
	while(loopCheck) {
		tempObj = document.getElementById("chartprod" + i);
		if(tempObj) {
			elementsArray.push(tempObj);
		} else {
			loopCheck = false;
		}
		i++;
	}
	elementsArray.reverse();
	for(var i = 0; i < elementsArray.length; i++) {
		elementsArray[i].style.display = (elementsArray[i].style.display == "none" || (elementsArray[i].style.display == "" && i >= (elementsArray.length / 2))) ? "block" : "none";
	}
	text.innerHTML = (text.innerHTML.indexOf("Full") != -1) ? text.innerHTML.replace(/Full/, "Upgrade") : text.innerHTML.replace(/Upgrade/, "Full");
}