( function() {
	function iframe_resize() {
		var body = document.body;
		var html = document.documentElement;	
		var height = 0;
		var bodyElms = document.querySelectorAll('body > *');
		var i = 0;

		for (i = 0; i < bodyElms.length; ++i) {
			height += bodyElms[i].offsetHeight;
		}
		height += 100;
		if ( parent.postMessage ) {
			parent.postMessage( {
				height : height,
				sender : "SymexGlobal",
				iframeId : window.symexIframeHost || null,
				}, '*' );
		}
	}
	function proceed() {
		if ( parent.postMessage ) {
			parent.postMessage( {
				sender : "SymexGlobal",
				message : "Proceed",
				}, '*' );
		}
	}
	if( document.getElementById("calcul") != undefined) {
		document.getElementById("calcul").addEventListener("click", function (){
			proceed();
		});
	}

	if ( window.MutationObserver ) {
	
		// Create an observer instance linked to the callback function
		var observer = new MutationObserver( function() {
			iframe_resize();
		});
	
		// Start observing the target node for configured mutations
		observer.observe( document.body, {
			attributes: true,
			childList: true,
			characterData: true,
			subtree: true
		});
		
	}
	else {	
		iframe_resize();
		window.addEventListener( 'DOMSubtreeModified', iframe_resize );
        window.addEventListener( 'DOMNodeInserted', iframe_resize );
        window.addEventListener( 'DOMNodeRemoved', iframe_resize );
	}
})();