// JavaScript Document

// this function is needed to work around 
// a bug in IE related to element attributes

function hasClass(obj) 
{
	var result = false;
    if (obj.getAttributeNode("class") != null) 
	{
         result = obj.getAttributeNode("class").value;
    }
     return result;
}   

function stripe(id) 
{
	// the flag we'll use to keep track of 
    // whether the current row is odd or even
    var even = false;
  
    // if arguments are provided to specify the colours
    // of the even & odd rows, then use the them;
    // otherwise use the following defaults:
    var evenColor = arguments[1] ? arguments[1] : "#fff";
    var oddColor = arguments[2] ? arguments[2] : "#eee";
  
    // obtain a reference to the desired table
    // if no such table exists, abort
    var table = document.getElementById(id);
    if (! table) { return; }
    
    // by definition, tables can have more than one tbody
    // element, so we'll have to get the list of child
    // <tbody>s 
    var tbodies = table.getElementsByTagName("tbody");

    // and iterate through them...
    for (var h = 0; h < tbodies.length; h++) 
	{
    	// find all the &lt;tr&gt; elements... 
      	var trs = tbodies[h].getElementsByTagName("tr");
      
      	// ... and iterate through them
      	for (var i = 0; i < trs.length; i++) 
		{
	        // avoid rows that have a class attribute
    	    // or backgroundColor style
        	if (! hasClass(trs[i]) && ! trs[i].style.backgroundColor) 
			{
 		  		// get all the cells in this row...
          		var tds = trs[i].getElementsByTagName("td");
        
          		// and iterate through them...
          		for (var j = 0; j < tds.length; j++) 
				{
                	var mytd = tds[j];

            		// avoid cells that have a class attribute
            		// or backgroundColor style
            		if (! hasClass(mytd) && ! mytd.style.backgroundColor) 
					{
                    	mytd.style.backgroundColor = even ? evenColor : oddColor;
            
            		}
          		}
        	}
        	// flip from odd to even, or vice-versa
        	even =  ! even;
      	}
    }
}