hash = new hashManager();

function hashManager() {

				 
	this.tmphash = '';
	
	this.handleHistory   = hashManager_handleHistory;
	this.startEdit 		   = hashManager_startEdit;
	this.stopEdit 		   = hashManager_stopEdit;
	this.getHashData 	   = hashManager_getHashData;
	this.setHashData	   = hashManager_setHashData;
	this.setHashDataNode = hashManager_setHashDataNode;
	this.getHash			 	 = hashManager_getHash;
	
	this.curhash = this.getHash();
	
	window.setInterval("hash.handleHistory()", 100);	
}


function hashManager_handleHistory() {
	if (this.getHash() != this.curhash ) {
		this.curhash = this.getHash();
		jaf_rehash();
	} 
}

function hashManager_getHash() {
	return window.location.hash.substr(1);
}

function hashManager_startEdit() {
	this.tmphash = this.getHash();
}

function hashManager_stopEdit() {
	if (this.tmphash != this.getHash()) {
		this.curhash = this.tmphash;
		window.location.hash = this.tmphash;
	}
	this.tmphash = "";
}

function hashManager_getHashData( id ) {
	var values = this.getHash().split('&');
	for (var i = 0; i < values.length; i++) {
		var split = values[i].split('=');
		if (split[0] == id) {
		 return split[1];
		}
	}
	return '';
}

function hashManager_setHashData( id , value ) {

	var newhash = "";
	var hashnames = new Array();
	var hashvalues = new Array();
				
	var values = this.tmphash.split('&');
				
	for (var valuecnt = 0; valuecnt < values.length; valuecnt++) {
		var split = values[valuecnt].split('=');
		if (split[0] != "") {
			hashnames.push(split[0]);
			hashvalues.push(split[1]);
		}
	}
	
	var match = 0;		
	for (var valuecnt = 0; valuecnt < hashnames.length; valuecnt++) {
		if (hashnames[valuecnt] == id) {
			hashvalues[valuecnt] = value;
			var match = 1;
		}
	}
	if (match == 0) {
		hashnames.push(id);
		hashvalues.push(value);
	}

	for (var hashcnt = 0; hashcnt < hashnames.length; hashcnt++) {
		var newhash = newhash + hashnames[hashcnt] + "=" + hashvalues[hashcnt] + "&";
	}

	this.tmphash = newhash;

}

function hashManager_setHashDataNode( HashNode ) {

	var newhash = "";
	var hashnames = new Array();
	var hashvalues = new Array();
				
	var values = this.tmphash.split('&');
				
	for (var valuecnt = 0; valuecnt < values.length; valuecnt++) {
		var split = values[valuecnt].split('=');
		if (split[0] != "") {
			hashnames.push(split[0]);
			hashvalues.push(split[1]);
		}
	}
				
	for (var hashcnt = 0; hashcnt < HashNode.getElementsByTagName('value').length; hashcnt++) {
		var match = 0;
		var hashname = HashNode.getElementsByTagName('value')[hashcnt].attributes[0].nodeValue;
		if (HashNode.getElementsByTagName('value')[hashcnt].childNodes.length > 0) {
			var hashvalue = HashNode.getElementsByTagName('value')[hashcnt].childNodes[0].nodeValue;
		} else {
			var hashvalue = "";
		}
		for (var valuecnt = 0; valuecnt < hashnames.length; valuecnt++) {
			if (hashnames[valuecnt] == hashname) {
				hashvalues[valuecnt] = hashvalue;
				var match = 1;
			}
		}
		if (match == 0) {
			hashnames.push(hashname);
			hashvalues.push(hashvalue);
		}
	}

	for (var hashcnt = 0; hashcnt < hashnames.length; hashcnt++) {
		if (hashvalues[hashcnt] != '') {
			newhash = newhash + hashnames[hashcnt] + "=" + hashvalues[hashcnt] + "&";
		}
	}

	this.tmphash = newhash;

}