document.getElementsByClassName = function(cl) {
	var retnode = [];
	var myclass = new RegExp('\\b'+cl+'\\b');
	var elem = this.getElementsByTagName('*');
	for (var i = 0; i < elem.length; i++) {
		var classes = elem[i].className;
		if (myclass.test(classes)) retnode.push(elem[i]);
	}
	return retnode;
};

function showMainIframe(eleId, elLeft, elWidth){
    var eleClass = eleId + "Li";
    var numClass = document.getElementsByClassName(eleClass);
    var numMainLi = numClass.length;
    var mainL = elLeft + "px";
    var mainW = elWidth + "px";
    var mainH = (numMainLi*16)+"px";
    var ulId = document.getElementById("mainIframe");

    ulId.style.visibility = "visible";
    ulId.style.top = "30px";
    ulId.style.left = mainL;
    ulId.style.width = mainW;
    ulId.style.height = mainH;
}

function hideMainIframe(){
    document.getElementById("mainIframe").style.visibility = "hidden";
    document.getElementById("mainIframe").style.top = "0px";
    document.getElementById("mainIframe").style.left = "0px";
    document.getElementById("mainIframe").style.width = "0px";
    document.getElementById("mainIframe").style.height = "0px";
}
function hideMainIframeIE6(){
	document.getElementById("menuOne").style.visibility = "hidden";
}


function showSubIframe(eleId, numMenu, elLeft){
    var numLi = document.getElementById(eleId).getElementsByTagName("li");
    var numSubLi = numLi.length;
    var subL = elLeft + "px";
    var subH = (numSubLi*16)+"px";
    var subT = (numMenu*16+30)+"px";
    var ulId = document.getElementById("subIframe");   
   
    ulId.style.visibility = "visible";
    ulId.style.top = subT;
    ulId.style.left = subL;
    ulId.style.width = "160px";
    ulId.style.height = subH;
    
    if (elLeft == 210 && numSubLi >= 19){
    document.getElementsByClassName("prSnippetNumberOfRatingsText")[0].style.visibility = "hidden"; 
    document.getElementsByClassName("prStars")[0].style.width = "57px";
    }
}

function hideSubIframe(){
    document.getElementById("subIframe").style.visibility = "hidden";
    document.getElementById("subIframe").style.top = "0px";
    document.getElementById("subIframe").style.left = "0px";
    document.getElementById("subIframe").style.width = "0px";
    document.getElementById("subIframe").style.height = "0px";
    
   // document.getElementsByClassName("prSnippetNumberOfRatingsText")[0].style.visibility = "visible"; 
   // document.getElementsByClassName("prStars")[0].style.width = "85px";
}<!-- ph=1 -->
<!-- nhm:from_kauri -->