/*  getElementsByClassName()

	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/
*/	
var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};
/*  http://www.openjs.com/scripts/dom/class_manipulation.php  */
function hasClass(ele,cls) {
	return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
	if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}

/* My functions */
function setHref(el,linkstr) {
	el.className = "unit link";
	el.onclick = function() {
		location.href = linkstr;
	}
}
function setLink() {
	var units = getElementsByClassName("unit", "td", document);
	for (var i=0; i<units.length; i++) {
		var unit = units[i];
		var unitanchors = unit.getElementsByTagName("a");
		var link = unitanchors[0].href;
		setHref(unit,link);
	}
}
function setSortHandles() {
	var sortHandles = getElementsByClassName("sort", "a", document);
	var url = location.href.replace(/sort=.*SC/,'');
	url = url.replace('&#','&');
	url = url.replace('&&','&');
	var sortsplit = String(/sort=.*SC/.exec(location.search)).split("%7C%7C");
	var lastindex = sortsplit.length - 1;
	var sortstr = sortsplit[lastindex];
	if(sortstr) {
		var sortby = sortstr.split("%3A")[0];
		var sortto = sortstr.split("%3A")[1];
//		alert(sortto);
	}
	for (var i = 0; i < sortHandles.length; i++) {
		var handle = sortHandles[i];
		var parent = handle.parentNode;
		if(parent.className == sortby) {
			addClass(handle,sortto);
			var plusmanuf = (parent.className == 'model') ?  "manufacturer%3A" : "";
			var dir = (sortto == 'ASC') ? 'DESC' : 'ASC';
			if (plusmanuf) plusmanuf += dir + '%7C%7C';
			var thisurl = url + "&sort=distance:ASC%7C%7C" + plusmanuf + parent.className + "%3A" + dir;
			thisurl = thisurl.replace('&&','&');
			handle.href = thisurl;
		} else {
//			addClass(handle,'DESC');
			var plusmanuf = (parent.className == 'model') ?  "manufacturer%3AASC%7C%7C" : "";
			handle.href = url + "&sort=distance%3AASC%7C%7C" + plusmanuf + parent.className + "%3AASC";
		}
	}
}
window.onload = function() {
	setLink();
	setSortHandles();
}