function randomColor() {
		var cores = ['#1f77b4', '#ff7f0e', '#2ca02c', '#d62728', '#9467bd', '#8c564b', '#e377c2', '#7f7f7f', '#bcbd22', '#17becf'];
		return cores[Math.floor(Math.random()*cores.length)];
	}

	document.addEventListener("DOMContentLoaded", function() {
		var keywords = [{"text":"Bolivia","size":8},{"text":"Independencia judicial","size":3},{"text":"pluralismo jur\u00eddico","size":2},{"text":"filosof\u00eda del derecho","size":2},{"text":"constituci\u00f3n","size":2},{"text":"Kafka","size":2},{"text":"derecho civil","size":2},{"text":"derecho","size":2},{"text":"Tribunal Constitucional","size":2},{"text":"Elecciones judiciales","size":2},{"text":"literatura","size":2},{"text":"arbitraje de inversiones","size":2},{"text":"principio del inter\u00e9s superior del ni\u00f1o","size":2},{"text":"interpretaci\u00f3n","size":2},{"text":"positivismo jur\u00eddico","size":2},{"text":"Derecho al aborto","size":2},{"text":"justicia","size":2},{"text":"cultura de paz","size":1},{"text":"Arbitrabilidad objetiva","size":1},{"text":"condiciones de compatibiliad","size":1},{"text":"justicia restaurativa","size":1},{"text":"persecuci\u00f3n penal p\u00fablica","size":1},{"text":"principios esenciales del arbitraje","size":1},{"text":"arbitraje boliviano","size":1},{"text":"arbitraje comercial","size":1},{"text":"principio de ultima ratio","size":1},{"text":"contratos administrativos","size":1},{"text":"Procedimiento arbitral","size":1},{"text":"principio de oportunidad","size":1},{"text":"Presidencialismo","size":1},{"text":"Medios Alternativos de Soluci\u00f3n de Conflictos","size":1},{"text":"mora","size":1},{"text":"valle","size":1},{"text":"parajurisdicci\u00f3n","size":1},{"text":"resarcimiento","size":1},{"text":"perjuicios","size":1},{"text":"acreedor","size":1},{"text":"lucro cesante","size":1},{"text":"da\u00f1o emergente","size":1},{"text":"intereses","size":1},{"text":"MASC","size":1},{"text":"principio nominalista","size":1},{"text":"dinero","size":1},{"text":"cumplimiento obligaciones pecuniarias","size":1},{"text":"retraso","size":1},{"text":"actos propios","size":1},{"text":"responsabilidad","size":1},{"text":"C\u00f3digo Civil","size":1},{"text":"deudor","size":1},{"text":"sede del arbitraje","size":1}];
		var totalWeight = 0;
		var width = 300;
		var height = 200;
		var transitionDuration = 200;	
		var length_keywords = keywords.length;
		var layout = d3.layout.cloud();

		layout.size([width, height])
			.words(keywords)
			.fontSize(function(d)
			{
				return fontSize(+d.size);
			})
			.on('end', draw);
		
		var svg = d3.select("#wordcloud").append("svg")
			.attr("viewBox", "0 0 " + width + " " + height)	
			.attr("width", '100%');		
		
		function update() {
			var words = layout.words();
			fontSize = d3.scaleLinear().range([16, 34]);
			if (words.length) {
				fontSize.domain([+words[words.length - 1].size || 1, +words[0].size]);
			}
		}
		
		keywords.forEach(function(item,index){totalWeight += item.size;});

		update();

		function draw(words, bounds) {
			var w = layout.size()[0],
                h = layout.size()[1];

			scaling = bounds
                ? Math.min(
                      w / Math.abs(bounds[1].x - w / 2),
                      w / Math.abs(bounds[0].x - w / 2),
                      h / Math.abs(bounds[1].y - h / 2),
                      h / Math.abs(bounds[0].y - h / 2),
                  ) / 2
                : 1;

			svg
			.append("g")
			.attr(
                "transform",
                "translate(" + [w >> 1, h >> 1] + ")scale(" + scaling + ")",
            )
			.selectAll("text")
				.data(words)
			.enter().append("text")
				.style("font-size", function(d) { return d.size + "px"; })
				.style("font-family", 'serif')
				.style("fill", randomColor)
				.style('cursor', 'pointer')
				.style('opacity', 0.7)
				.attr('class', 'keyword')
				.attr("text-anchor", "middle")
				.attr("transform", function(d) {
					return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";
				}) 
				.text(function(d) { return d.text; })
				.on("click", function(d, i){
					window.location = "https://lawreview.ucb.edu.bo/a/search?query=QUERY_SLUG".replace(/QUERY_SLUG/, encodeURIComponent(''+d.text+''));
				})
				.on("mouseover", function(d, i) {
					d3.select(this).transition()
						.duration(transitionDuration)
						.style('font-size',function(d) { return (d.size + 3) + "px"; })
						.style('opacity', 1);
				})
				.on("mouseout", function(d, i) {
					d3.select(this).transition()
						.duration(transitionDuration)
						.style('font-size',function(d) { return d.size + "px"; })
						.style('opacity', 0.7);
				})
				.on('resize', function() { update() });
		}

		layout.start();

	});