Creating TD (cell) To A TR Using Javascript

I am trying to create a TD to a TR & setting the TD properties as follows.

myTabsRow=document.getElementById("tabsRow"); newCell=myTabsRow.insertCell(myTabsRow.cells.length);
newCell.id=tabName+"_data";
newCell.innerHTML="Test"
newCell.onclick=domouseclick('test'); // domouseclick is defined as

function domouseclick(argName)
{
alert(argName);
}

Problems is that i am not able to pass argument to the domouseclick function. It is working fine without the argument. Please help me if anybody knows how to pass argument to this function.