/* preload images objects indicating lefthand nav menu state (right/down arrows). objects are used in functions : toggleMenu(); shutOpenMenu(). */ var imgMenuOpen = new Image(); // for down-arrow image var imgMenuShut = new Image(); // for right-arrow image imgMenuOpen.src = '/TWOLOST/GRAPHICS/goldarrowdown.gif'; imgMenuShut.src = '/TWOLOST/GRAPHICS/goldarrow.gif'; /*=======================================================================================/ / toggleMenu : toggles open|shut the lefthand menu divs when user clicks parent link. / param: linkID[string]; return: [none]. */ function toggleMenu(linkID) { if ((eval("document.getElementById(linkID + '_div') ;" ).style.display)=="block") { //shutOpenMenu(); eval("document.getElementById(linkID + '_div') ;" ).style.display="none"; eval("document.getElementById(linkID + '_img') ;" ).src=imgMenuShut.src; } else { //shutOpenMenu(); eval("document.getElementById(linkID + '_div') ;" ).style.display="block"; eval("document.getElementById(linkID + '_img') ;" ).src=imgMenuOpen.src; } //event.returnValue=0; } /*=======================================================================================/ / shutOpenMenu : shuts all lefthand menu divs. is called from toggleMenu() function. / param: [none]; return: [none]. */ function shutOpenMenu() { var strThis = document.location.href; if(strThis.indexOf('/TWOLOST/') != -1) { nIndex = 1; } else { nIndex = 0; } for (var k=0; k<=nIndex; k++) { if (eval("document.getElementById('Link" + k + "_img'); ").src==imgMenuOpen.src) { eval("document.getElementById('Link" + k + "_div'); ").style.display="none"; eval("document.getElementById('Link" + k + "_img'); ").src=imgMenuShut.src; } } } /*=======================================================================================/ / initMaps : navigation (three image maps stacked on each other, changed with CSS. / preload images via body tag / example: