make ie<9 to support border-radius

ie_radius.js

;(function($){
	// append vml xmlns to document
	if　($.browser.msie && document.namespaces["v"] == null) {
		document.namespaces.add("v", "urn:schemas-microsoft-com:vml");
		var ss = document.createStyleSheet().owningElement;
		ss.styleSheet.cssText = "v\\:*{behavior:url(#default#VML);}"
	}

	var getHTML = function(o) {
		return '<div class="ie_border_radius" style="position: absolute; left: 0px; top: 0px; z-index: -1; width:' +
			o.width + "px;height:" + o.height + 'px;">' +
			'<v:roundrect arcsize="' + o.arcSize + '" strokecolor="' +
			o.strokeColor + '" strokeweight="' + o.strokeWeight +
			'" style="behavior: url(#default#VML); position:absolute;  antialias: true; width:' +
			o.width + "px;height:" + o.height + 'px;' + "" + '" >' +
			'<v:fill color="' + o.fillColor + '" src="' + o.fillSrc +
			'" type="tile" style="behavior: url(#default#VML);" />' +
			'</v:roundrect>' +
		'</div>';
	};

	$.fn.borderRadius = !$.browser.msie ? function() {} : function(options) {
		var options = options || {};
		return this.each(function(index, element) {
			var opts = {};
			$(this).attr('data-force-radius', 1);

			if (this._border_radius_opts) {
				opts = this._border_radius_opts;
				$(this).find(".ie_border_radius").remove();
			} else {
				opts.strokeColor = this.currentStyle.borderColor; 
				opts.strokeWeight = this.currentStyle.borderWidth; 
	
				opts.fillColor = this.currentStyle.backgroundColor; 
				opts.fillSrc = this.currentStyle.backgroundImage.replace(/^url\("(.+)"\)$/, '$1'); 
	
				this.style.border = 'none'; // perhaps add onto padding?
				this.style.background = 'transparent';
	    		this._border_radius_opts = opts;
			}
	
			opts.width = $(this).outerWidth() ;
			opts.height = $(this).outerHeight(); 
	    		
			var s = this.currentStyle, r = options.radius || parseInt(
				s['-ie-border-radius'] ||
				s['-moz-border-radius'] ||
				s['-webkit-border-radius'] ||
				s['-border-radius'] ||
				s['ie-border-radius'] ||
				s['moz-border-radius'] ||
				s['webkit-border-radius'] ||
				s['border-radius']
			);
	
	    	opts.arcSize = Math.min(r / Math.min(opts.width, opts.height), 1);

			if (r)
		        this.innerHTML += getHTML(opts);
	        
	        if (this.currentStyle.position != "absolute")
				this.style.position = "relative";
			this.style.zoom = 1; // give it a layout 
		});
    };
    
    $(document).resize(function(event) {
		if ($.fn.borderRadius.resizeHolder)
			clearTimeout($.fn.borderRadius.resizeHolder);

		$.fn.borderRadius.resizeHolder = setTimeout(function() {
			$('[data-force-radius]').borderRadius();
		}, 50);
    });
})(jQuery);