var dlg_popup;

function showBasicDialog_(objId, dlgId, width, height)
{
	if(!dlg_popup)
	{
		dlg_popup = new Ext.BasicDialog(dlgId, { 
		            autoTabs:false,
		            width:450,
		            height:350,
		            shadow:true,
		            minWidth:300,
		            minHeight:250,
		            proxyDrag: true
		    });
		dlg_popup.setContentSize(width, height);
		dlg_popup.center();
		dlg_popup.addKeyListener(27, dlg_popup.hide, dlg_popup);
		dlg_popup.addButton('Close', dlg_popup.hide, dlg_popup);
	}

	if(dlg_popup && !dlg_popup.isVisible())
	{
		dlg_popup.show(Ext.get(objId));
	}
}