add: if( event == undefined ) event = window.event; 
context:    document.onmouseup = function( event ) {      win.el_body.style.display = "block";      document.onmousemove = false;      /* user event */      if( win.onresize ) win.onresize();   }
meta: 4636	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4636/d9d6b2e3c521aa0e9b012cc36e10a59371fdfee5/hop-iwindow.js/buggy/share/hop-iwindow.js