var string = "Search by product code or keyword"; 

function search()
{ 
if(document.form_search.keywords.value == "" || document.form_search.keywords.value == string)
{ document.form_search.keywords.value = string; }
else
{ location.href = 'index.php?id=search&keywords=' + document.form_search.keywords.value; }
}

function check_search()
{ 
if(document.form_search.keywords.value == string)
{ document.form_search.keywords.value = ""; }
}

function pop_window(url,width,height)
{ thewindow = window.open(url,'popped','width='+width+',height='+height+',toolbars=no,scrollbars=yes,copyhistory=yes,status=no'); }

function enlarge_image(url)
{ 
document.getElementById("image_popup").style.display = "block"; 
var content = '<table border="0" cellpadding="0" cellspacing="0" style="width:100%; height:100%" align="center">'; 
content += '<tr>'; 
content += '<td style="width:100%; height:100%" align="center">'; 
content += '<img src="' + url + '" border="20" class="border20"><br>'; 
content += '</td>'; 
content += '</tr>'; 
content += '</table>'; 
document.getElementById("image_popup").innerHTML = content; 
//document.getElementsByTagName("body")[0].style.overflow = "hidden"; 
}

function close_image()
{
document.getElementById("image_popup").innerHTML = ""; 
document.getElementById("image_popup").style.display = "none"; 
//document.getElementsByTagName("body")[0].style.overflow = "auto"; 
}

function toggle(id)
{
	if (document.layers)
	{
		current = (document.layers[id].display == 'none') ? 'block' : 'none';
		document.layers[id].display = current;
	}
	else if (document.all)
	{
		current = (document.all[id].style.display == 'none') ? 'block' : 'none';
		document.all[id].style.display = current;
	}
	else if (document.getElementById)
	{
		vista = (document.getElementById(id).style.display == 'none') ? 'block' : 'none';
		document.getElementById(id).style.display = vista;
	}
}

function menu_open(id)
{
	if (document.layers)
	{ document.layers[id].display = 'block'; }
	else if (document.all)
	{ document.all[id].style.display = 'block'; }
	else if (document.getElementById)
	{ document.getElementById(id).style.display = 'block'; }
}

function menu_close(id)
{
	if (document.layers)
	{ document.layers[id].display = 'none'; }
	else if (document.all)
	{ document.all[id].style.display = 'none'; }
	else if (document.getElementById)
	{ document.getElementById(id).style.display = 'none'; }
}