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if (changeCompanyModal) { changeCompanyModal.style.display = "block"; } // ✅ Must match exactly 'openChangeCompanyModal' window.dispatchEvent(new CustomEvent('openChangeCompanyModal', { detail: isRoleChange })); } function closeChangeCompany() { const changeCompanyModal = document.getElementById("changeCompanyModal"); if (changeCompanyModal) { changeCompanyModal.style.display = "none"; } } document.addEventListener("DOMContentLoaded", function () { // Get modal elements const changeCompanyModal = document.getElementById("changeCompanyModal"); const closeModelIcon = document.getElementById("CloseModelIcon"); // Get dropdown elements const cartButton = document.getElementById("cartButton"); const cartDropdown = document.getElementById("cartDropdown"); const topHeaderIcon = document.getElementById("topHeaderIcon"); const topHeaderdropdown = document.getElementById("topHeaderdropdown"); const closeDropdownIcon = document.getElementById("closeDropdown"); // Close modal when clicking the close icon if (closeModelIcon && changeCompanyModal) { closeModelIcon.addEventListener("click", function () { changeCompanyModal.style.display = "none"; }); } // Toggle cart dropdown visibility if (cartButton && cartDropdown) { cartButton.addEventListener("click", function (e) { e.stopPropagation(); const isVisible = cartDropdown.classList.contains("opacity-100"); cartDropdown.classList.toggle("opacity-100", !isVisible); cartDropdown.classList.toggle("visible", !isVisible); cartDropdown.classList.toggle("opacity-0", isVisible); cartDropdown.classList.toggle("invisible", isVisible); }); } // Toggle top header dropdown visibility if (topHeaderIcon && topHeaderdropdown) { topHeaderIcon.addEventListener("click", function (e) { e.stopPropagation(); const isVisible = topHeaderdropdown.classList.contains("opacity-100"); topHeaderdropdown.classList.toggle("opacity-100", !isVisible); topHeaderdropdown.classList.toggle("visible", !isVisible); topHeaderdropdown.classList.toggle("opacity-0", isVisible); topHeaderdropdown.classList.toggle("invisible", isVisible); }); } // Close dropdowns when clicking outside document.addEventListener("click", function () { if (cartDropdown) { cartDropdown.classList.add("opacity-0", "invisible"); cartDropdown.classList.remove("opacity-100", "visible"); } if (topHeaderdropdown) { topHeaderdropdown.classList.add("opacity-0", "invisible"); topHeaderdropdown.classList.remove("opacity-100", "visible"); } }); // Close cart dropdown when clicking the close icon if (closeDropdownIcon && cartDropdown) { closeDropdownIcon.addEventListener("click", function () { cartDropdown.classList.add("opacity-0", "invisible"); cartDropdown.classList.remove("opacity-100", "visible"); }); } }); </script> <!-- Show on large screens --> </div> </div> </div> </nav> </div> <!-- For Small Screens header Homelayout --> <div class="lg:hidden block bg-white border-b border-[#1f9980] bg-[#f5fffd]" style="z-index: 555;"> <div class="w-full flex justify-center items-start relative gap-0.5 pr-2"> <div class="w-full"> <app-category-menuv2></app-category-menuv2> </div> <div class="text-start flex pt-[8px]"> <!-- For Small Screens --> <div class="lg:hidden flex justify-end"> <style> .Image-icon-xs { height: 40px; width: 40px; 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if (changeCompanyModal) { changeCompanyModal.style.display = "block"; } // ✅ Must match exactly 'openChangeCompanyModal' window.dispatchEvent(new CustomEvent('openChangeCompanyModal', { detail: isRoleChange })); } function closeChangeCompanySmall() { const changeCompanyModal = document.getElementById("changeCompanyModalsmall"); if (changeCompanyModal) { changeCompanyModal.style.display = "none"; } } document.addEventListener("DOMContentLoaded", function () { const toggleButton = document.getElementById("dropdownToggle"); const dropdownContent = document.getElementById("dropdownContent"); const dropdownButton = document.getElementById('dropdownheaderButton'); const dropdownMenu = document.getElementById('dropdownMenu'); const topHeaderIcon = document.getElementById('topHeaderIcon'); const closeModelIcon = document.getElementById('CloseModelIcon'); const topHeaderdropdown = document.getElementById('topHeaderdropdown'); // Toggle top header dropdown visibility if (dropdownButton && topHeaderdropdown) { dropdownButton.addEventListener('click', function (e) { e.stopPropagation(); const isVisible = topHeaderdropdown.classList.contains('opacity-100'); topHeaderdropdown.classList.toggle('opacity-100', !isVisible); topHeaderdropdown.classList.toggle('visible', !isVisible); topHeaderdropdown.classList.toggle('opacity-0', isVisible); topHeaderdropdown.classList.toggle('invisible', isVisible); }); } // Toggle dropdown visibility if (toggleButton && dropdownContent) { toggleButton.addEventListener("click", function (event) { event.stopPropagation(); dropdownContent.classList.toggle("hidden"); if (dropdownMenu) dropdownMenu.classList.add("hidden"); }); } // Toggle dropdown menu visibility if (dropdownButton && dropdownMenu) { dropdownButton.addEventListener("click", function (event) { event.stopPropagation(); dropdownMenu.classList.toggle("hidden"); }); } // Close all dropdowns when clicking outside document.addEventListener("click", function () { if (dropdownContent) dropdownContent.classList.add("hidden"); if (dropdownMenu) dropdownMenu.classList.add("hidden"); if (topHeaderdropdown) { topHeaderdropdown.classList.add('opacity-0', 'invisible'); 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It is not easy to teach yourself. If you need to learn more about them, try out an online differential equations training class taught by a differential equations teacher at Guruface to learn the fundamentals of the subject. Sign up today to try it out! </p> </div> <!-- Image Section --> <div class="w-full md:w-5/12 md:order-2 flex justify-center mb-6 md:mb-0"> <span class="icon-category"> <img src="https://cdn-images-gf-prod.azureedge.net/categories/icon-category-mathematics.png" alt="Category Icon" height="300" width="350" class="border border-gray-300 object-contain" /> </span> </div> </div> </div> </div> </div> <!-- 404 ERROR CONTENT --> <div class="search-container category-mathematics-theme popularsearchtags_categires"> <div> <Featured-Entities></Featured-Entities> </div> </div> <link rel="stylesheet" href="/css/featured-entities-app.css" /> <script src="/js/featured-entities-app.js"></script> <div class="bg-gray-900 text-white lg:pt-5 pt-2 pb-5"> <div class="custom-container px-4"> <div class="flex flex-wrap -mx-4"> <!-- About Company --> <div class="w-full lg:w-5/12"> <div class="hidden lg:!flex flex-col"> <h4 class="text-lg font-semibold">ABOUT US</h4> <a href="/about-us"> <img src="https://cdn-images-gf-prod.azureedge.net/GuruFaceLogo.png" class="mt-4 p-1 rounded w-[72px] bg-[#f8f9fa]" alt="Logo"> </a> </div> <div class=" lg:!hidden flex justify-between"> <h4 class="text-lg font-semibold">ABOUT US</h4> <a href="/about-us"> <img src="https://cdn-images-gf-prod.azureedge.net/GuruFaceLogo.png" class="p-1 rounded w-[72px] bg-[#f8f9fa]" alt="Logo"> </a> </div> <p class="lg:mt-4 mt-1 text-muted"> Guruface is your complete online platform for learning, teaching, and training. Our mission is to provide a state-of-the-art online training platform for students, freelance teachers, corporate trainers, and small to mid-size companies worldwide. </p> <p class="mt-2 "> We have a foundation of highly talented professional trainers who specialize in a variety of subject areas. </p> <a href="/about-us" class="mt-4 inline-block px-4 py-2 border border-yellow-400 text-yellow-400 rounded hover:bg-yellow-400 hover:text-gray-900 transition duration-300">Read More</a> </div> <!-- Links --> <div class="w-full lg:w-3/12 lg:px-4 mb-2 lg:mb-0"> <h4 class="text-lg font-semibold mt-4 lg:mt-0">Links</h4> <ul class="lg:mt-4 mt-2 lg:space-y-2 text-[#007bff]"> <li><a href="/faq" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>FAQs</a></li> <li><a href="/contact-us" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Contact Us</a></li> <li><a href="/about-us" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>About Us</a></li> <li><a href="http://blog.guruface.com/" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Blogs</a></li> <li><a href="/find-courses" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Courses</a></li> <li><a href="/training-events" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Events</a></li> <li><a href="/find-trainers" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Trainers</a></li> <li><a href="/find-trainer-jobs" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Jobs</a></li> <li><a href="/practice-exams" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Practice Exams</a></li> <li><a href="/knowledge-tests" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Knowledge Tests</a></li> <li><a href="/masterclasses" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Master Classes</a></li> <li><a href="/learningpaths" class="hover:text-gray-200"><i class="fa fa-angle-right mr-2"></i>Learning Paths</a></li> </ul> </div> <!-- Location --> <div class="w-full lg:w-4/12 lg:px-4"> <h4 class="text-lg font-semibold">Location</h4> <p class="lg:mt-4 text-gray-400">P O Box 1843<br>Frisco<br>Texas 75034</p> <a href="tel:(+1) 888-448-7432" class="mt-4 text-[#007bff]"><i class="fa fa-phone mr-2"></i>(+1) 888-448-7432</a><br /> <a href="mailto:info@guruface.com" class="text-[#007bff]"><i class="fa fa-envelope mr-2"></i>info@guruface.com</a> </div> </div> <!-- Copyright --> <div class="border-t border-gray-800 mt-5 pt-4"> <p class="text-center text-muted text-sm"> © Copyright 2026 Guruface Inc. 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