.text_mark { 
    background-color: #AAEEFF ;
}

.text_mark_invisible { 
    background-color: none ;
}

.text_mark_over {
    cursor: pointer ;
    background-color: #CCFFFF ;
}

.text_mark_selected {
    background-color: #AAEEFF ;
	border: 1px solid red ;
}