function URLparam(paramName,defaulValue) { //-- get a given parameter from the URL
		var idx = document.URL.indexOf('?');
		var params = new Array();
		if (idx != -1) {
			var pairs = document.URL.substring(idx+1, document.URL.length).split('&');
				for (var i=0; i<pairs.length; i++) {
					nameVal = pairs[i].split('=');
					params[nameVal[0]] = nameVal[1];
				}
		}
		var paramValue = unescape(params[paramName]);
		var test = "z" + paramValue;
		if(test == "zundefined"){paramValue = defaulValue}
	return paramValue;
	}
	
	function URLencode(inStr) { //-- translate all "reserved" characters of a string to HTML equivalents
	outStr=' '; //not '' for a NS bug!
		for (i=0; i < inStr.length; i++) {
			aChar=inStr.substring (i, i+1);
			switch(aChar){
			case '%': outStr += "%25"; break; case ',': outStr += "%2C"; break;
			case '/': outStr += "%2F"; break; case ':': outStr += "%3A"; break;
			case '~': outStr += "%7E"; break; case '!': outStr += "%21"; break;
			case '"': outStr += "%22"; break; case '#': outStr += "%23"; break;
			case '$': outStr += "%24"; break; case "'": outStr += "%27"; break;
			case '`': outStr += "%60"; break; case '^': outStr += "%5E"; break;
			case '&': outStr += "%26"; break; case '(': outStr += "%28"; break;
			case ')': outStr += "%29"; break; case '+': outStr += "%2B"; break;
			case '{': outStr += "%7B"; break; case '|': outStr += "%7C"; break;
			case '}': outStr += "%7D"; break; case ';': outStr += "%3B"; break;
			case '<': outStr += "%3C"; break; case '=': outStr += "%3D"; break;
			case '>': outStr += "%3E"; break; case '?': outStr += "%3F"; break;
			case '[': outStr += "%5B"; break; case '\\': outStr += "%5C"; break;
			case ']': outStr += "%5D"; break; case ' ': outStr += "+"; break;
			default: outStr += aChar;
			}
		}
	return outStr.substring(1, outStr.length);
	}
	

	function URLstrip(lokatie){ //-- determine the absolute path of a location (strip the domain)
		if(lokatie==-1){ //-- take the current doc's URL if no location is given
			lokatie = document.location.href;
		}
	
		var slashcount = 0;
		var urllength = 0;
		
		if(lokatie.indexOf('http://')>-1){
			for (var i=0; i<lokatie.length; i++){
			var lettercheck = lokatie.substring(i,i+1);
				if (lettercheck == '/'){
					slashcount=slashcount+1;
					if (slashcount == 3){urllength=i;}
				}
			}
		lokatie = lokatie.substring(urllength,(lokatie.length));
		}
		
	return lokatie;
	}