A system for providing warning lights for emergency vehicles in which the warning lights are incorporated into standard appearing accessories of the vehicle. The present invention further provides a method for determining the amount of early pregnancy associated molecular isoforms of human chorionic gonadotropin in a sample. The first lens L1 is a meniscus lens having a positive refractive power, of which convex surface faces the object side, the second lens L2 is a meniscus lens having a positive or negative refractive power, of which convex surface faces the image side, and the third lens L3 is a meniscus lens having a negative refractive power, of which convex surface faces the object side. If the measured data amount is equal to or larger than a predetermined value, the image data stored in a memory is recompressed at a second compression ratio as a higher compression ratio by a Huffman decoding circuit, bit shifting circuit, and Huffman encoding circuit. Target web pages that are scanned may include those associated with an application coded in a web browser-supported language, such a Rich Internet Application.