mxSvgCanvas2D.prototype.createElement=function(a,b){if(null!=this.root.ownerDocument.createElementNS)return this.root.ownerDocument.createElementNS(b||mxConstants.NS_SVG,a);a=this.root.ownerDocument.createElement(a);null!=b&&a.setAttribute("xmlns",b);return a};mxSvgCanvas2D.prototype.getAlternateText=function(a,b,c,d,e,f,g,k,l,m,n,p,q){return null!=f?this.foAltText:null};