var g_poppy;

function poper(url, width, height, params)
{
	width = (width)?width:430;
	height = (height)?height:400;
	if((width==796 || width=="796") && !document.all)
		width=780;
	fonctions = { menubar: 'yes', location: 'yes', resizable: 'yes', scrollbars: 'yes' };
	if(params)
		for(i in params)
			fonctions[i] = params[i];
	if(g_poppy && !g_poppy.closed)
		g_poppy.location.href = url;
	else
	{
		params = '';
		for(i in fonctions)
			params += ','+i+'='+fonctions[i];
		g_poppy = window.open(url, 'CEA', 'height='+height+',width='+width+params);
	}
	if(window.focus)
		g_poppy.focus();
	return false;
}