source = new Array()
		source[0]  = "./images/icon/business_icon_on.jpg"
		source[1]  = "./images/icon/business_icon_off.jpg"
		source[2]  = "./images/icon/solution_icon_on.jpg"
		source[3]  = "./images/icon/solution_icon_off.jpg"
		source[4]  = "./images/icon/products_icon_on.jpg"
		source[5]  = "./images/icon/products_icon_off.jpg"
		source[6]  = "./images/icon/support_icon_on.jpg"
		source[7]  = "./images/icon/support_icon_off.jpg"

		picture = new Array()
		for (var i = 0; i < source.length; i++) {
			picture[i] = new Image()
			picture[i].src = source[i]
		}

		function switchOnOff(pictureNumber, pictureName){
			document[pictureName].src = picture[pictureNumber].src
		}