script.js

<script type='text/javascript'>

function getQueryArgs()
{
	var query = window.location.search.substring(1);
	var vars = query.split('&');
	var params = {}
	for (var i = 0; i < vars.length; i++) {
		var pair = vars[i].split('=');
		var key = decodeURIComponent(pair[0]);
		var val = decodeURIComponent(pair[1].replace(/[+]/g,'%20'));
		params[key] = val;
	}
	return params;
};

function updateLinks()
{
	
	args = getQueryArgs();
	var query_str = '';
	for(var key in args)
		query_str += key+'='+encodeURIComponent(args[key])+'&';
	query_str = query_str.substr(0,query_str.length -1);

	var nodes = document.getElementsByClassName('kform_presellLink');
	var len = nodes.length;
	
	if(len > 0)
	{
		for(var i in nodes)
		{	
			var node = nodes[i];

			var href = node.href;
			if(href.indexOf('?') > -1)
				href += "&"+query_str;
			else
				href += "?"+query_str;
				
			node.href = href;
		}
	}
}

window.addEventListener('load',function()
{
	updateLinks();
	
});


</script>