[NTG-context] named destinations with highlation

Dear sir, suppose that i am having a target text and link to a target text in a pdf document(created either by using pdftex or by using a distiller) if i click the link it will take you to the target text. When you go to the target text if i want to highlate the text with some color temporarily( like when you use find ) what must be the postscript code or javascript code that i should embed in a tex file.   shiva shankar.