/*************************************************************
	 *    DYNIFS - Dynamic IFrame Auto Size v1.0.0
	 *
	 *    Copyright (C) 2006, Markus (phpMiX)
	 *    This script is released under GPL License.
	 *    Feel free to use this script (or part of it) wherever you need
	 *    it ...but please, give credit to original author. Thank you. :-)
	 *    We will also appreciate any links you could give us.
	 *    http://www.phpmix.org
	 *
	 *    Enjoy! ;-)
	*************************************************************/

	var DYNIFS = {
		// Storage for known IFrames.
		iframes: {},
		// Here we save any previously installed onresize handler.
		oldresize: null,
		// Flag that tell us if we have already installed our onresize handler.
		ready: false,
		// The document dimensions last time onresize was executed.
		dim: [-1,-1],
		// Timer ID used to defer the actual resize action.
		timerID: 0,
		// Obtain the dimensions (width,height) of the given document.
		getDim: function(d) {
			var w=200, h=200, scr_h, off_h;
			if( d.height ) { return [d.width,d.height]; }
			with( d.body ) {
				if( scrollHeight ) { h=scr_h=scrollHeight; w=scrollWidth; }
				if( offsetHeight ) { h=off_h=offsetHeight; w=offsetWidth; }
				if( scr_h && off_h ) h=Math.max(scr_h, off_h);
			}
			return [w,h];
		},
		// This is our window.onresize handler.
		onresize: function() {
			// Invoke any previously installed onresize handler.
			if( typeof this.oldresize == 'function' ) { this.oldresize(); }
			// Check if the document dimensions really changed.
			var dim = this.getDim(document);
			if( this.dim[0] == dim[0] && this.dim[1] == dim[1] ) return;
			// Defer the resize action to prevent endless loop in quirksmode.
			if( this.timerID ) return;
			this.timerID = setTimeout('DYNIFS.deferred_resize();', 10);
		},
		// This is where the actual IFrame resize is invoked.
		deferred_resize: function() {
			// Walk the list of known IFrames to see if they need to be resized.
			for( var id in this.iframes ) this.resize(id);
			// Store resulting document dimensions.
			this.dim = this.getDim(document);
			// Clear the timer flag.
			this.timerID = 0;
		},
		// This is invoked when the IFrame is loaded or when the main window is resized.
		resize: function(id) {
			// Browser compatibility check.
			if( !window.frames || !window.frames[id] || !document.getElementById || !document.body )
				return;
			// Get references to the IFrame window and layer.
			var iframe = window.frames[id];
			var div = document.getElementById(id);
			if( !div ) return;
			// Save the IFrame id for later use in our onresize handler.
			if( !this.iframes[id] ) {
				this.iframes[id] = true;
			}
			// Should we inject our onresize event handler?
			if( !this.ready ) {
				this.ready = true;
				this.oldresize = window.onresize;
				window.onresize = new Function('DYNIFS.onresize();');
			}
			// This appears to be necessary in MSIE to compute the height
			// when the IFrame'd document is in quirksmode.
			// OTOH, it doesn't seem to break anything in standards mode, so...
			if( document.all ) div.style.height = '0px';
			// Resize the IFrame container.
			try{
				var dim = this.getDim(iframe.document);
				div.style.height = (dim[1]) + 'px';
			}catch(err){var i=0;}

			
		}
	};