var popup = true;
var inside_default = '<div align="right"> <a class = "close_btn" href = "javascript:void(0);" onclick = "close_popup();" >close[x]  </a> </div>';
function open_popup(val)
{
	if(popup)
	{
		document.getElementById('popup').style.display = "block";
		var inner = "<img src = 'img/popup_"+val+".gif' /> ";
		document.getElementById('popup').innerHTML = inside_default+inner;		
	}else
	{
		document.getElementById('popup').style.display = "none";
		document.getElementById('popup').innerHTML = inside_default;		
	}
	popup = !popup;

}
function close_popup()
{
	document.getElementById('popup').style.display = "none";
	
	document.getElementById('popup').innerHTML = inside_default;
	popup = true;
}