给html element添加atrribute,包括javascript字符串截取
code snippet:
e.Row.Attributes.Add("onmouseover", "if(this.className.indexOf('project-listitem-selected')<0)this.className+=' project-listitem-mouseover'");
e.Row.Attributes.Add("onmouseout", "if(this.className.indexOf('project-listitem-selected')<0)this.className=this.className.substring(0,this.className.indexOf(' project-listitem-mouseover'))");