add: e.preventDefault(); e.stopPropagation(); 
context:    cursor.onmousedown = function( e ) {      document.addEventListener( "mousemove", mousemove, true );      document.addEventListener( "mouseup", delmousemove, true );      document.addEventListener( "onblur", delmousemove, true );   }
meta: 4636	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4636/26edb05e4c0d69806e96596c555502f4a0e8d9d7/hop-paned.js/buggy/share/hop-paned.js