function build_up_menu(my_href, root)
{	

	var href="";
	
	document.write("<table class='up_menu_tbl' cellpadding='0' cellspacing='0'><tr>");
		
	build_up_menu_td("index",root);	 
	build_up_menu_td("contactus", root);
	build_up_menu_td("feet", root);
	build_up_menu_td("computer", root);		
	document.write("</tr></table>");
}



function build_up_menu_td(name, home)
{	

	var tdStr = "<td width='85'><a href='";	
	var linkPre = "";
	var linkPre1 = "";
	if (home==true)
	{
		if (name!="index")
		{
			linkPre1 = "sigal_files/";
		}
		linkPre = "sigal_files/";
	}	
	else
	{
		if (name=="index")
		{
			linkPre1 = "../";
		}
	}
	tdStr+=linkPre1;
	tdStr+= name;
	tdStr+= ".htm'><img border=0 src='";
	tdStr+= linkPre+"images/";
	tdStr+= name;
	tdStr+= ".jpg'";
	tdStr+= "onmouseover=\"this.src='";
	tdStr+= linkPre + "images/";
	tdStr+= name;
	tdStr+= "_over.jpg'\" onmouseout=\"this.src='";
	tdStr+= linkPre+"images/";
	tdStr+= name;
	tdStr+= ".jpg'\"";
	tdStr+= "></a></td>";		
	document.write(tdStr);	
}