// strategy_case_study_rollovers.js
// sub menus
 case_studies_off = new Image(); case_studies_off.src = "../images/strategy/case_studies_sub_head_off.gif";
 case_studies_on = new Image(); case_studies_on.src = "../images/strategy/case_studies_sub_head_on.gif";
 automotive_studies_off = new Image(); automotive_studies_off.src = "../images/text_headings/automotive_menu_off.gif";
 automotive_studies_on = new Image(); automotive_studies_on.src = "../images/text_headings/automotive_menu_on.gif";
 communications_studies_off = new Image(); communications_studies_off.src = "../images/text_headings/communications_menu_off.gif";
 communications_studies_on = new Image(); communications_studies_on.src = "../images/text_headings/communications_menu_on.gif";
 retail_studies_off = new Image(); retail_studies_off.src = "../images/text_headings/retail_menu_off.gif";
 retail_studies_on = new Image(); retail_studies_on.src = "../images/text_headings/retail_menu_on.gif";
 software_studies_off = new Image(); software_studies_off.src = "../images/text_headings/software_menu_off.gif";
 software_studies_on = new Image(); software_studies_on.src = "../images/text_headings/software_menu_on.gif";
 entertainment_studies_off = new Image(); entertainment_studies_off.src = "../images/text_headings/entertainment_menu_off.gif";
 entertainment_studies_on = new Image(); entertainment_studies_on.src = "../images/text_headings/entertainment_menu_on.gif";
 healthcare_studies_off = new Image(); healthcare_studies_off.src = "../images/text_headings/healthcare_menu_off.gif";
 healthcare_studies_on = new Image(); healthcare_studies_on.src = "../images/text_headings/healthcare_menu_on.gif";
 transport_studies_off = new Image(); transport_studies_off.src = "../images/text_headings/transport_menu_off.gif";
 transport_studies_on = new Image(); transport_studies_on.src = "../images/text_headings/transport_menu_on.gif";
 pharmaceutical_studies_off = new Image(); pharmaceutical_studies_off.src = "../images/text_headings/pharmaceutical_menu_off.gif";
 pharmaceutical_studies_on = new Image(); pharmaceutical_studies_on.src = "../images/text_headings/pharmaceutical_menu_on.gif";
 manufacturing_studies_off = new Image(); manufacturing_studies_off.src = "../images/text_headings/manufacturing_menu_off.gif";
 manufacturing_studies_on = new Image(); manufacturing_studies_on.src = "../images/text_headings/manufacturing_menu_on.gif";