function showIbox(iboxid) { var ibox = document.getElementById(iboxid); var wwidth; var wheight; var bwidth = 400; var bheight = 300; if (self.innerWidth) { wwidth = self.innerWidth; wheight = self.innerHeight; } else if (document.documentElement && document.documentElement.clientWidth) { wwidth = document.documentElement.clientWidth; wheight = document.documentElement.clientHeight; } else if (document.body) { wwidth = document.body.clientWidth; wheight = document.body.clientHeight; } ibox.style.width = bwidth + "px"; ibox.style.height = bheight + "px"; ibox.style.left = ((wwidth - bwidth) / 2) + "px"; ibox.style.top = ((wheight - bheight) / 2) + "px"; // alert('wwidth='+wwidth+'; bwidth='+bwidth+'; wheight='+wheight+'; bheight='+bheight); ibox.zIndex = '0'; ibox.style.display = 'block'; return false; } function HideIbox(iboxid) { var ibox = document.getElementById(iboxid); ibox.zIndex = '1000'; ibox.style.display = 'none'; }