function openwin(url,width,height,mode) 
{
	var full, mode, scroll, pos, posy, aheight, awidth;

	if( mode == 'fullscreen' )
	{
		width = screen.width;
		height = screen.height;
		width = 100;
		height = 100;
		posx = 0;
		posy = 0;
		scroll = 0;
		full = 1;
	}
	else
	{
		full = 0;
		aheight = screen.height - 150;
		awidth = screen.width - 12;

		if( ( height > aheight ) && ( width > awidth ) )
		{
			height = aheight;
			width = awidth;
			posy = 0;
			posx = 0;
			scroll = 1;
		}
		else if( height > aheight )
		{
			height = aheight;
			width += 16;
			posx = ( awidth / 2 ) - ( width / 2 );
			posy = 0;
			scroll = 1;
		}
		else if( width > awidth )
		{
			width = awidth;
			height += 20;
			posy = ( aheight / 2 ) - ( height / 2 );
			posx = 0;
			scroll = 1;
		}
		else
		{
			scroll = 0;
			posx = ( awidth / 2 ) - ( width / 2 );
			posy = ( aheight / 2 ) - ( height / 2 );
		}
	}

	window.open(url,'1','fullscreen='+full+',width='+width+',height='+height+',resizable=1,scrollbars='+scroll+',directories=0,status=0,menu=0,copyhistory=0,left='+posx+',top='+posy); 
}