function openWindow(page, width, height, scrollbars) {
	    if(scrollbars==null)scrollbars = 0;
		center = 1;
		
		if ((parseInt(navigator.appVersion) >= 4 ) && (center)){
			xposition = (screen.width - width) / 2;
			yposition = (screen.height - height) / 2;
		}        
	        
		args = 'width=' + width + ',' 
		+ 'height=' + height + ',' 
		+ 'location=0,' 
		+ 'menubar=0,'
		+ 'resizable=0,'
		+ 'scrollbars=' + scrollbars + ','
		+ 'status=0,' 
		+ 'titlebar=0,'
		+ 'toolbar=0,'
		+ 'hotkeys=0,'
		+ 'screenx=' + xposition + ','  
		+ 'screeny=' + yposition + ',' 
		+ 'left=' + xposition +  ',' 
		+ 'top=' + yposition;       
	   	
		var varWinName = window.open(page,'childwindow',args);
			if (varWinName){
					varWinName.focus();

		}		
	
	}