function change_frames(uri_1,f1,uri_2,f2) {
  parent.topFrame.location.href=uri_1;
  parent.mainFrame.location.href = uri_2;
}

function change_topframe(uri) {
  parent.topFrame.location.href=uri;
}

function change_mainframe(uri) {
  parent.mainFrame.location.href=uri;
}

function openWindow(windowURL,windowName,windowWidth,windowHeight,coordX,coordY,windowScroll,windowStatus,windowLocation,windowToolbar){
	new_window= window.open(windowURL,windowName,'width='+windowWidth+',height='+windowHeight+',left='+coordX+',top='+coordY+',screenX='+coordX+',screenY='+coordY+',scrollbars='+windowScroll+',status='+windowStatus+',location='+windowLocation+',toolbar='+windowToolbar+'');
}