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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Split View Browser</title>
    <style>
        body {
            margin: 0;
            padding: 0;
            height: 100vh;
            overflow: hidden;
            font-family: Arial, sans-serif;
        }
        
        .split-container {
            display: flex;
            width: 100%;
            height: 100vh;
        }
        
        .frame-container {
            position: relative;
            height: 100%;
            overflow: hidden;
        }
        
        .frame {
            width: 100%;
            height: 100%;
            border: none;
        }
        
        .splitter {
            width: 8px;
            background: #ddd;
            cursor: col-resize;
            transition: background 0.2s;
        }
        
        .splitter:hover {
            background: #bbb;
        }
        
        .url-input-container {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            padding: 8px;
            background: rgba(255, 255, 255, 0.9);
            display: flex;
            z-index: 10;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        .url-input {
            flex: 1;
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
            margin-right: 8px;
        }
        
        .go-button {
            padding: 8px 16px;
            background: #4CAF50;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }
        
        .go-button:hover {
            background: #45a049;
        }
    </style>
</head>
<body>
    <div class="split-container">
        <div class="frame-container" id="left-container">
            <div class="url-input-container">
                <input type="text" class="url-input" id="left-url" placeholder="Enter URL for left frame (e.g., https://example.com)">
                <button class="go-button" onclick="loadFrame('left')">Go</button>
            </div>
            <iframe class="frame" id="left-frame"></iframe>
        </div>
        
        <div class="splitter" id="splitter"></div>
        
        <div class="frame-container" id="right-container">
            <div class="url-input-container">
                <input type="text" class="url-input" id="right-url" placeholder="Enter URL for right frame (e.g., https://example.com)">
                <button class="go-button" onclick="loadFrame('right')">Go</button>
            </div>
            <iframe class="frame" id="right-frame"></iframe>
        </div>
    </div>

    <script>
        // Initialize splitter functionality
        const splitter = document.getElementById('splitter');
        const leftContainer = document.getElementById('left-container');
        const rightContainer = document.getElementById('right-container');
        let isDragging = false;

        splitter.addEventListener('mousedown', function(e) {
            isDragging = true;
            document.body.style.cursor = 'col-resize';
            document.addEventListener('mousemove', onMouseMove);
            document.addEventListener('mouseup', onMouseUp);
        });

        function onMouseMove(e) {
            if (!isDragging) return;
            
            const containerWidth = document.querySelector('.split-container').offsetWidth;
            const leftWidth = e.clientX - splitter.offsetWidth / 2;
            const rightWidth = containerWidth - leftWidth - splitter.offsetWidth;
            
            leftContainer.style.width = leftWidth + 'px';
            rightContainer.style.width = rightWidth + 'px';
        }

        function onMouseUp() {
            isDragging = false;
            document.body.style.cursor = '';
            document.removeEventListener('mousemove', onMouseMove);
            document.removeEventListener('mouseup', onMouseUp);
        }

        // Set initial split (50/50)
        function initializeSplit() {
            const containerWidth = document.querySelector('.split-container').offsetWidth;
            const splitWidth = (containerWidth - splitter.offsetWidth) / 2;
            
            leftContainer.style.width = splitWidth + 'px';
            rightContainer.style.width = splitWidth + 'px';
        }

        // Load URL into frame
        function loadFrame(side) {
            const urlInput = document.getElementById(`${side}-url`);
            const frame = document.getElementById(`${side}-frame`);
            
            let url = urlInput.value.trim();
            
            // Add https:// if not present
            if (url && !url.match(/^https?:\/\//)) {
                url = 'https://' + url;
            }
            
            if (url) {
                frame.src = url;
            }
        }

        // Initialize on load
        window.addEventListener('load', function() {
            initializeSplit();
            
            // Load default pages if needed
            // document.getElementById('left-url').value = 'https://example.com';
            // document.getElementById('right-url').value = 'https://example.org';
            // loadFrame('left');
            // loadFrame('right');
        });

        // Handle window resize
        window.addEventListener('resize', initializeSplit);
    </script>
</body>
</html>