// border-radius
// Jonah Fox
// MIT Licensed
// Use like : $(".myClass").borderRadius() will attempt to apply curved corners as per the elements -moz-border-radius attribute
// Good:
// - supports textured forgrounds and backgrounds
// - maintains layouts
// - very easy to use
// - IE6 and IE7
// Bad:
// - not fluid. Reapply if the dimensions change
// - only supports rounding all corners
// - no hover
// - no Opera

(function($){
 
  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);}";
  }
 
  function RR(o) {
    var html = '<div class="ie_border_radius" style="position: absolute; left: 0px; top: 0px; z-index: -1; width:' + (o.width) + "px;height:" + (o.height) + 'px;">';
    html += '<v:roundrect arcsize="' + o.arcSize + '" strokecolor="' + o.strokeColor + '" strokeweight="' + o.strokeWeight + '" style="behavior: url(#default#VML); position:absolute; antialias: true; width:' + (o.width-2) + "px;height:" + (o.height-4) + 'px;' + "" + '" >';
    html += '<v:fill color="' + o.fillColor + '" src="' + o.fillSrc + '" type="tile" style="behavior: url(#default#VML);" />';
    html += '</v:roundrect>';
    html += "</div>";
    return html;
  }
 
  $.fn.borderRadius = !$.browser.msie ? function(options) { 
  	this.css({ '-moz-border-radius':options.radius+'px','-webkit-border-radius':options.radius+'px','border-radius':options.radius+'px' }); 
  
  } : function(options){
 
   		var options = options || {}
   
		return this.each(function() {
		
			var opts = {}
			
			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 r = options.radius || parseInt( this.currentStyle['-ie-border-radius'] || this.currentStyle['-moz-border-radius'] || this.currentStyle['moz-border-radius'] );
			
			opts.arcSize = Math.min( r / Math.min(opts.width, opts.height), 1);
			
			//this.innerHTML += RR(opts);
			$(this).append('<div></div>');
			this.lastChild.innerHTML = RR(opts);
			
			if(this.currentStyle.position != "absolute")
				this.style.position = "relative";
			
			this.style.zoom = 1; // give it a layout
		});
   }
})(jQuery);