// toggle visibility 

function toggle( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == "none"){
  				target.style.display = "";
  			} else {
  				target.style.display = "none";
  			}
  	}
}

function PageQuery(q) {
	if(q.length > 1) 
	this.q = q.substring(1, q.length);
	else this.q = null;
	this.keyValuePairs = new Array();
	if(q) {
	for(var i=0; i < this.q.split("&").length; i++) {
	this.keyValuePairs[i] = this.q.split("&")[i];
	}
	}
	this.getKeyValuePairs = function() { return this.keyValuePairs; }
	this.getValue = function(s) {
	for(var j=0; j < this.keyValuePairs.length; j++) {
	if(this.keyValuePairs[j].split("=")[0] == s)
	return this.keyValuePairs[j].split("=")[1];
	}
	return false;
	}
	this.getParameters = function() {
	var a = new Array(this.getLength());
	for(var j=0; j < this.keyValuePairs.length; j++) {
	a[j] = this.keyValuePairs[j].split("=")[0];
	}
	return a;
	}
	this.getLength = function() { return this.keyValuePairs.length; }
}

function queryString(key){
	var comment = new PageQuery(window.location.search);
	return unescape(comment.getValue(key));
}

function checkComment()
{
	if (queryString("visible") != "show")
		document.getElementById('comments').style.display = "none";	
	else
		document.getElementById('comments').style.display = "";
		
	if (queryString("email") != "false")
		document.getElementById('Header1_email').value = unescape(queryString("email").replace(/\+/g,  " "));
		
	if (queryString("comment") != "false")
		document.getElementById('Header1_comment').value = unescape(queryString("comment").replace(/\+/g,  " "));
}