function gotResizeMessage(event) {
	        console.log( "got resize message: " + JSON.stringify(event.data))
	        
	        var matches = document.querySelectorAll('iframe'); // iterate through all iFrames on page
	        for (i=0; i<matches.length; i++) {
	        	// found the iFrame that sent us a message
	            if (matches[i].contentWindow == event.source) {
	                console.log("found iframe that sent a message: " + matches[i].src)
	                    
	                //matches[i].width = Number( event.data.width )  <-- we do not do anything with the page width for now
	                matches[i].height = Number( event.data.height )
	                
	                return 1;
	            }
	        }
	    }
	            
	    document.addEventListener("DOMContentLoaded", function() {window.addEventListener("message", gotResizeMessage, false)});