function writeHeader() {
document.write('<div id="container">');
document.write('<div id="header">');
document.write('<table width="960" border="0" cellspacing="0" cellpadding="0" background="/Biology/open_day_images/bc_head10.gif">');
document.write('<tr><td width="826" height="134" align="left" valign="top"><img src="/Biology/open_day_images/lf10.gif" width="629" height="134" /></td>');
document.write('<td align="right" valign="top"><a href="/"><img src="/Biology/open_day_images/wis10.gif" width="191" height="134" /></a></td>');
document.write('</tr></table>');
document.write('</div><!--close header div-->');

}

///////////////////////////////Navigation Bar/////////////////////////////
function initHorNav() { 
  var numOfBars= 5;
  var  topHtml ='';
  var  botHtml ='';
  topHtml += '<div id="menu"><div id="navigator"> <ul>';
  botHtml += '</ul></div></div>' ;//closes menu and navigate div
  botHtml += '<div id="content">' ;
  horNav= new NavClass(numOfBars, topHtml, botHtml,0 );  
  setHorBarArray(); 
}


function setHorBarArray()	  
{	barHorArray[1] = new BarClass(1,"home", "/Biology/open_day_2010/", "Welcome<br /> Letter");
	barHorArray[2] = new BarClass(2,"book", "/perl/lsabstract.mperl?submit=search", "Book of Abstracts");
	barHorArray[3] = new BarClass(3,"poster", "/Biology/open_day_2010/poster", "Poster<br />Guidelines" );
	barHorArray[4] = new BarClass(4, "committee", "/Biology/open_day_2010/committee","Organizing<br />Committee" );
	barHorArray[5] = new BarClass(5, "program", "/Biology/open_day_2010/program", "Program" ); 
//	barHorArray[6] = new BarClass(6, "book", "http://www1.weizmann.ac.il/perl/lsabstract.mperl?submit=search","Book of <br /> Abstracts" );
	
	}