Initialize Viewport JS Function

/* INITIALIZE VIEWPORT FUNCTION - Author/Contributor: GML/BJW - Requires jQuery - EXAMPLE USAGE: initViewport("div#main", "meta[name='viewport']"); */ initViewport = function(mainElemSelector, metaViewportSelector) { if (mainElemSelector === null) { mainElemSelector = "body div:first"; } if (metaViewportSelector === null) { metaViewportSelector = "meta[name='viewport']"; } var objMetaViewport = $(metaViewportSelector), intScreenWidth = screen.width, intScreenOrientation = Math.abs(window.orientation), intMinWidth = parseFloat($(mainElemSelector).css("width")), /* intMinWidth = parseFloat($(mainElemSelector).css("min-width")), */ intRatio = intScreenWidth / intMinWidth, strContent = "width=device-width, user-scalable=yes, "; /* For debugging/testing */ alert("width=" + intScreenWidth + ", orientation=" + intScreenOrientation + ", ratio= " + intRatio); if (intRatio > 0 && intRatio < 1 && intScreenOrientation !== 90) { strContent = strContent + "minimum-scale=" + intRatio + ", maximum-scale=" + intRatio; } else { strContent = strContent + "minimum-scale=1, maximum-scale=1"; } objMetaViewport.attr("content", strContent); /* For debugging/testing */ alert(strContent); };