var MAX_RETRIES_IFRAME_HEIGHT = 10;
var BODY = 'body';
var MAIN_FRAME_URL = 'runInMainFrameURL';
var extra = true;

function setIFrameHeight( iFrameName, maxHeight, hasContent, retries )
{	
	var iframeWin = window.frames[iFrameName];
	var theIFrame = getIFrame( iFrameName );
	
	if ( theIFrame && iframeWin )
	{
		var docHt = getDocHeight( iframeWin.document );

		// need to add to height to be sure it will all show
		if ( docHt )
		{
			if ( maxHeight && docHt > maxHeight )
	        {
				docHt = maxHeight;				
			}

			// IE9 and FF needs a little extra :(
			if ( extra )
			{
				docHt = docHt + 25;
				extra = false;
			}

			theIFrame.style.height = docHt + 'px';
		}
		else if ( hasContent && retries <= MAX_RETRIES_IFRAME_HEIGHT )
		{
			//document height is 0, but the hasContent says there should be content,
			//keep trying until there is or until we hit the maximum retries
			//this can happen (i think) when content has finished loading so the onLoad(...) fires
			//but the page has not rendered yet, so its not the correct size yet
			setTimeout( 'setIFrameHeight( \'' + iFrameName + '\', ' + maxHeight + ', ' + hasContent + ', ' + ++retries + ' );', 200 );
		}
	}
}

function changeIFrameHeight( iFrameName, height )
{
	var theIFrame = getIFrame( iFrameName );
	
	if ( theIFrame )
	{
		theIFrame.style.height = height + 'px';
	}
}

function getIFrame( iFrameName )
{
	return document.getElementById? document.getElementById(iFrameName): document.all? document.all[iFrameName]: null;
}

function loadiframe( iframeName, url )
{
	if ( window.frames[iframeName] )
	{
		window.frames[iframeName].location = url;
		return false;
	}
	else
	{
		return true;
	}
}

function getFrameDocument( documentWithFrameSet, theFrame )
{
	if ( documentWithFrameSet.getElementById( theFrame ) )
	{
		if ( documentWithFrameSet.getElementById( theFrame ).contentDocument )
		{
			//W3C
			return documentWithFrameSet.getElementById( theFrame ).contentDocument;
		}
		else
		{
			//IE
			return documentWithFrameSet.frames[ theFrame ].document;
		}
	}
}

function runInMainFrame()
{
	try 
	{
		if ( this.name != BODY )
		{
			findFrameDocument( parent, BODY, 1 ).location = document.getElementById( MAIN_FRAME_URL ).value;
		}
	}
	catch( e )
	{
		//do nothing...must be in a window
	}
	
}

function findFrameDocument( window, theFrame, numChecks )
{
	if ( getFrameDocument( window.document, theFrame ) )
	{
		return getFrameDocument( window.document, theFrame );
	}
	else if ( numChecks != 5 )
	{
		return findFrameDocument( window.parent, theFrame, numChecks + 1 );
	}
}

// set width is still in development, not working 100%
function setIFrameWidth( iframeName, maxWidth, dontResize )
{
    var resize;
    if ( dontResize )
    {
       resize = false;
    }
    else
    {
       resize = true;
    }

	var iframeWin = window.frames[iframeName];
	var theIFrame = document.getElementById? document.getElementById(iframeName): document.all? document.all[iframeName]: null;
	
	if ( theIFrame && iframeWin )
	{
		var docWt = getDocWidth( iframeWin.document );

		// need to add to width to be sure it will all show
		if ( docWt )
		{
			if ( ( maxWidth ) && ( docWt > maxWidth ) )
	        {
	          docWt = maxWidth;
	          if ( resize )
	          {
			     theIFrame.style.width = docWt + 'px';
	          }
			}
			else
			{
				theIFrame.style.width = docWt + 'px';
			}
		}
	}
}

function getDocWidth(doc)
{
	var docWt = 0, sw, ow;
	if (doc.width)
	{
		docWt = doc.width;
	}
	else if (doc.body)
	{
		if (doc.body.scrollWidth)
		{
			docWt = sw = doc.body.scrollWidth;
		}
		if (doc.body.offsetWidth)
		{
			docWt = ow = doc.body.offsetWidth;
		}
		if (sw && ow)
		{
			docWt = Math.max(sw, ow);
		}
	}

	return docWt;
}