// JavaScript Document

function visi(nr)
{
	if (document.layers)
	{
		vista = (document.layers[nr].visibility == 'hide') ? 'show' : 'hide'
		document.layers[nr].visibility = vista;
	}
	else if (document.all)
	{
		vista = (document.all[nr].style.visibility == 'hidden') ? 'visible'	: 'hidden';
		document.all[nr].style.visibility = vista;
	}
	else if (document.getElementById)
	{
		vista = (document.getElementById(nr).style.visibility == 'hidden') ? 'visible' : 'hidden';
		document.getElementById(nr).style.visibility = vista;

	}
}

function blocking(nr)
{
	if (document.layers)
	{
		alert('layer');
		current = (document.layers[nr].display == 'none') ? 'block' : 'none';
		document.layers[nr].display = current;
	}
	else if (document.all)
	{
		//alert('all');
		if (document.all[nr].style.display=='')
		{
		document.all[nr].style.display = 'none';
		};
		current = (document.all[nr].style.display == 'none') ? 'block' : 'none';
		document.all[nr].style.display = current;
	}
	else if (document.getElementById)
	{
		// alert('getElementById');
		// alert(document.getElementById(nr).style.display);
		if (document.getElementById(nr).style.display=='')
		{
		document.getElementById(nr).style.display = 'none';
		};
		vista = (document.getElementById(nr).style.display == 'none') ? 'block' : 'none';
		// alert(vista);
		document.getElementById(nr).style.display = vista;
	}
}

function blockingstate(nr,state)
{
	if (document.layers)
	{
		// current = (document.layers[nr].display == 'none') ? 'block' : 'none';
		document.layers[nr].display = state;
	}
	else if (document.all)
	{
		// current = (document.all[nr].style.display == 'none') ? 'block' : 'none';
		document.all[nr].style.display = state;
	}
	else if (document.getElementById)
	{
		// vista = (document.getElementById(nr).style.display == 'none') ? 'block' : 'none';
		document.getElementById(nr).style.display = state;
	}
}