function new_popup(url,width,height){popup(url,'',width,height);}
function popup(url,target,width,height,params){popupReturn(url,target,width,height,params);}
function fullScreen(theURL){return window.open(theURL,'','fullscreen=yes, scrollbars=auto');}
function popupReturn(url,target,width,height,params){if(target==null)target="_new";if(width==null)width=800;if(height==null)height=600;if(params==null)params="resizable=yes,menubar=no,status=yes,personalbar=no,scrollbars=yes";return openAWindow(url,target,width,height,params);}
function openAWindow(url,target,width,height,params){target="";var winl=(screen.availWidth-width)/2;var wint=(screen.availHeight-height)/2;return window.open(url,target,"top="+wint+",left="+winl+",width="+width+",height="+height+","+params);}
function popupFullscreen(url,target){window.open(url,target,'fullscreen=yes');}
function popupMaximised(url,target,params){var win=popupReturn(url,target,screen.availWidth,screen.availHeight,params);}
var popupMaximized=popupMaximised;function maximiseWindow(theWindow){theWindow.moveTo(0,0);theWindow.outerHeight=screen.availHeight;theWindow.outerWidth=screen.availWidth;}
var maximizeWindow=maximiseWindow;