function popUp( fileName, windowName, urlParameters, windowWidth, windowHeight,windowScrolls,resizeable, menubar)
			{
			
		
				var winl = (screen.width - windowWidth) / 2;
			    var wint = (screen.height - windowHeight) / 2;
				
				if (urlParameters.length > 0)
				{
					urlParameters = '?' + urlParameters;
				}
				if (!windowScrolls) 
				{
					windowScrolls = 'yes';
				}
				var windowFormat = 'width=' + windowWidth + ',height=' + windowHeight  + ',scrollbars=' + windowScrolls + ',menubar=' + menubar  ;
				var winformat2 = ',screenx=' + winl + ',screeny=' + wint + ',left=' + winl + ',top=' + wint

				var newWindow = window.open(fileName + urlParameters, windowName, windowFormat + winformat2, 'Editor' );
				if ( newWindow.opener == null )
				{
					newWindow.opener = window; 
				}
			
			 	newWindow.focus();	
				
			}