var id = 0;
var pid = 0;
var old = 0;
var pold = 0;



function do_show(id, pid)
{
	var el_old = document.getElementById('pdm_'+old+'');
	var el_pold = document.getElementById('pdel_'+old+''+pold+'');
	
	if(el_old)
	{
		el_old.style.display = 'none';
	}
	
	var el = document.getElementById('pdm_'+id+'');
	el.style.display = 'block';
	old = id;
	
	if (pid == undefined) {
		pid = 0;
	} else {
		var pel = document.getElementById('pdel_'+id+''+pid+'');
		pel.className = 'pd_menu_a';
		pold = pid;
	}
}