// setStyleByClass: given an element type and a class selector,
// style property and value, apply the style.
// args:
//  t - type of tag to check for (e.g., SPAN)
//  c - class name
//  p - CSS property
//  v - value
var ie = (document.all) ? true : false;

function setStyleByClass(t,c,p,v){
	var elements;
	if(t == '*') {
		// '*' not supported by IE/Win 5.5 and below
		elements = (ie) ? document.all : document.getElementsByTagName('*');
	} else {
		elements = document.getElementsByTagName(t);
	}
	
	var myReg = new RegExp("\\b"+c+"\\b");	

	for(var i = 0; i < elements.length; i++){
		var node = elements.item(i);

		for(var j = 0; j < node.attributes.length; j++) {
			if(node.attributes.item(j).nodeName.toLowerCase() == 'class') {
				if(node.attributes.item(j).nodeValue.match(myReg)) {

					eval('node.style.' + p + " = '" + v + "'");
				}
			}
		}
	}
}

function ExpandReview(){
	setStyleByClass("a", "expand" , "display", "none");
	setStyleByClass("span", "expand" , "display", "inline");
	setStyleByClass("a", "collapse" , "display", "inline");
}

function CollapseReview(){
	setStyleByClass("a", "expand" , "display", "inline");
	setStyleByClass("span", "expand" , "display", "none");
	setStyleByClass("a", "collapse" , "display", "none");
}