ÿþfunction clearField(aControl) {

  aControl.className = "user";

  aControl.value = "";

}



function goFind(aString) {

  qry = "http://www.google.co.uk/search?q=";

  qry += "site%3Awww.lbma.org.uk+";

  window.location = qry + aString;

  return false; // prevents submitting form to server

}



function convert(barweight)

{

if (barweight=="G")

	{

	O=document.myform.gram.value / 31.1034768;

	document.myform.ounce.value=(O);

	}

else

	{

	G=document.myform.ounce.value / 0.0321507465;

	document.myform.gram.value=(G);

	}

}



// for analysts  reviews



function showcomments(thisguy) {

	var whois = thisguy.className;											// name = class

	var tbl = thisguy.parentNode.parentNode;

	// highlight the table row

	var rws = tbl.getElementsByTagName('tr');

	for (i=0; i<rws.length; i++) {

		var rclass = rws[i].className;

		if (rclass.match(whois)) {

			rws[i].className = rclass+' show';							// highlight row

		} else {

			rws[i].className = rclass.replace(' show','');	// mute row

		}

	}

	// reveal the corresponding comment; hide others

	var metal = tbl.id.toLowerCase();

	var comms = document.getElementById('comments');

	var items = comms.getElementsByTagName('li');

	for (i=0; i<items.length; i++) {

		var iclass = items[i].className

		if ((iclass.match(whois+' '+metal))||(iclass.match(whois+' '+'all'))) {

			items[i].style.display = "block";							// show comment

		} else {

			items[i].style.display = "none";							// hide comment

		}

	}

}



function showfcst(name) {

	// select a forecast table to reveal, hide the others

	var tbls = document.getElementsByTagName("table");

	document.getElementById('metal').innerHTML = name;

	for (i=0; i<tbls.length; i++) {

		if (tbls[i].className.match('forecast')) 

		{

			if (tbls[i].id.match(name)) {

				var rows = tbls[i].getElementsByTagName('tr');

				for (j=0; j<rows.length; j++) 

					{rows[j].className.replace(' show','')} 	// mute all rows

				tbls[i].style.display = 'block';						// show table

			} else {

				tbls[i].style.display = 'none';							// hide table

			}

		}

	}

	// hide all comments

	var comm = document.getElementById("comments");

	var coms = comm.getElementsByTagName("li");

	for (k=0; k<coms.length; k++) {coms[k].style.display = 'none'}

}