js中给tabel动态添加行

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页面：

             	 				

					                
展品名称
					                
图片
					                
展品介绍
					                

					            
             	 			

js:

function additem()
{
    var row,cell,str;
    row = document.getElementById("exhibitsTr").insertRow();
    if(row != null )
    {
        cell = row.insertCell();
        cell.align="center";
        cell.innerHTML="";
        cell = row.insertCell();
        cell.align="center";
        cell.innerHTML="";
        cell = row.insertCell();
        cell.align="center";
        cell.innerHTML="";
        cell = row.insertCell();
        cell.align="center";
        cell.id = randomChar(10);
        cell.innerHTML="";
        count++;
    }
}