while(r.lastChild && r.firstChild != r.lastChild){ 
while(r.lastChild){ 
	clear: function(){		// summary: removes all shapes from a group/surface		var r = this.rawNode;		while(r.lastChild && r.firstChild != r.lastChild){			r.removeChild(r.lastChild);		}		return this;	// self	}
5168	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5168/172fa976493ddd60c987093d702b9e1aca8a75b5/svg.js/buggy/gfx/svg.js