// JavaScript Document
function setHeight(add)
	{
	//adjust the height of the content frame
	var minus=116;
	var tg2 = $('#middle2').height();
	var tg3 = $('#middle3').height();
	if( tg3 > tg2 )
		{
		var tinggi = (tg3+add)-minus;
		$('#mid1_mid, #mid4_mid').height(tinggi);
		$('#middle2').height(tg3+add);
		$('#middle3').height(tg3+add);
		}
	else
		{
		var tinggi = (tg2+add)-minus;
		$('#mid1_mid, #mid4_mid').height(tinggi);
		$('#middle3').height(tg2+add);
		$('#middle2').height(tg2+add);
		}
	}