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        function getscreensize() {
        
            document.getElementById("sw").innerHTML = self.screen.width;
            document.getElementById("sh").innerHTML = self.screen.height;
            document.getElementById("aw").innerHTML = self.screen.availWidth;
            document.getElementById("ah").innerHTML = self.screen.availHeight;
            
            if (document.documentElement && document.documentElement.clientWidth != 0) {
                document.getElementById("caw").innerHTML = document.documentElement.clientWidth;
                document.getElementById("cah").innerHTML = document.documentElement.clientHeight;
            }
            
            if (window.innerWidth) {
                document.getElementById("cbw").innerHTML = window.innerWidth;
                document.getElementById("cbh").innerHTML = window.innerHeight;
            }
            
            if (document.body) {
                document.getElementById("ccw").innerHTML = document.body.clientWidth;
                document.getElementById("cch").innerHTML = document.body.clientHeight;
            }
            
        }