function windowHeight()
{
        var alto= 0;
        if( typeof( window.innerWidth ) == 'number' )
        {
                alto= window.innerHeight;
        }

        else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
        {
                alto= document.documentElement.clientHeight;
        }

        else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
        {
                alto= document.body.clientHeight;
        }
        return alto;
}

function fixH()
{
        var maxHeight=document.getElementById('wrap').offsetHeight;
        var footerHeight = document.getElementById('footer').offsetHeight;
        var headHeight = document.getElementById('header').offsetHeight ;
        var winHeight = windowHeight() ;
        var contentHeight = (winHeight-(footerHeight + headHeight));
  
		
        if (maxHeight < winHeight)
        {
                document.getElementById('wrap').style.height=winHeight + "px";
                document.getElementById('sidebar').style.height = contentHeight + "px";
                document.getElementById('content80').style.height = contentHeight + "px";
        }
		
		if (document.getElementById('sidebar').offsetHeight < document.getElementById('content80').offsetHeight)
		{
			document.getElementById('sidebar').style.height = document.getElementById('content80').offsetHeight + "px";
		}

}