function do_nothing() {}

function init(){

var header = parseFloat(document.getElementById('blkHeader').style.height)

var footer = parseFloat(document.getElementById('blkFooter').style.height)

var body = parseFloat(document.getElementById('body').offsetHeight)

var content = body - header - footer;

//alert(parseFloat(document.getElementById('blkContent').scrollHeight))

var middlePane = parseFloat(document.getElementById('blkContent').scrollHeight)

content = (content > middlePane)? content - 6  : middlePane

document.getElementById('blkContent').style.height  =  content

}