function OpenEditorDialog( url ){

	OpenCenteredWindow( url, 'ContentEditor', '800', '600' );
}

function OpenCenteredWindow( url, windowName, width, height ){
	
	LeftPosition = ( screen.width ) ? ( screen.width - width ) /2 : 0; 
	TopPosition = ( screen.height ) ? ( screen.height - height ) /2 : 0; 
	window.open( url , windowName, 'height=' + height +', width=' + width +', scrollbars=Yes, menubar=no, screenX=110, left='+LeftPosition+', screenY=10, top=' + TopPosition ); 
}