legend

• width - (integer) the block width
• align - (string) the horizontal align of the block: 'left', 'right' or 'center'
• valign - (string) the vertical align of the block: 'top','bottom' or 'middle'
• layout - (string) a layout that defines text stretching in horizontal or vertical direction :'x' or 'y'
• padding - (integer) the legend block padding. Doesn't affect parameters 'align' and 'valign'
• margin - (integer) the legend block margin
• marker - an object that defines markers in the details block
  • type - (string) the marker type: 'square' or 'round'
  • radius - (integer) the marker radius (by default, 3)
  • width - (integer) the marker width
  • height - (integer) the marker height
• values - an array of objects, each of which defines a separate legend item
  • text - (string) the text label of an item
  • color - (string) the color of an item

• a template for element text in legend block.

Value type: String, function

• an object with settings.

Value type: Object

var chart =  new dhtmlXChart({
   legend:{
	width: 75,
	align:"right",
	valign:top,
	marker:{
		type:"round",
		width:15
	},
        values:[
		{text:"company A",color:"#3399ff"},
		{text:"company B",color:"#66cc00"}
	]
    },
    ...
})

or

chart.define("legend",{
	width: 75,
	align:"right",
	valign:top,
	marker:{
		type:"round",
		width:15
	},
	template:"#year#"
});