Firma:

screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Clickea aqui para abrir la imagen en otra ventana';}" onmouseover="if(this.resized) this.style.cursor='hand';" onclick="if(this.resized) {window.open('http://i2.tinypic.com/qrkwgw.png');}"  />