// JavaScript Document
    function displayContent(itemtoshow){
        if (itemtoshow == 'block0'){
            document.getElementById('block0').style.display='block';
			document.getElementById('link_block0').className = 'selected';
            document.getElementById('block1').style.display='none';
			document.getElementById('link_block1').className = '';
            document.getElementById('block2').style.display='none';
			document.getElementById('link_block2').className = '';
            document.getElementById('block3').style.display='none';
			document.getElementById('link_block3').className = '';
			//document.getElementById('block4').style.display='none';
			//document.getElementById('link_block4').className = '';
        }
        else if (itemtoshow == 'block1'){
            document.getElementById('block0').style.display='none';
			document.getElementById('link_block0').className = '';
            document.getElementById('block1').style.display='block';
			document.getElementById('link_block1').className = 'selected';
            document.getElementById('block2').style.display='none';
			document.getElementById('link_block2').className = '';
            document.getElementById('block3').style.display='none';
			document.getElementById('link_block3').className = '';
			//document.getElementById('block4').style.display='none';
			//document.getElementById('link_block4').className = '';
        }
        else if (itemtoshow == 'block2'){
            document.getElementById('block0').style.display='none';
			document.getElementById('link_block0').className = '';
            document.getElementById('block1').style.display='none';
			document.getElementById('link_block1').className = '';
            document.getElementById('block2').style.display='block';
			document.getElementById('link_block2').className = 'selected';
            document.getElementById('block3').style.display='none';
			document.getElementById('link_block3').className = '';
			//document.getElementById('block4').style.display='none';
			//document.getElementById('link_block4').className = '';
        }
        else if (itemtoshow == 'block3'){
            document.getElementById('block0').style.display='none';
			document.getElementById('link_block0').className = '';
            document.getElementById('block1').style.display='none';
			document.getElementById('link_block1').className = '';
            document.getElementById('block2').style.display='none';
			document.getElementById('link_block2').className = '';
            document.getElementById('block3').style.display='block';
			document.getElementById('link_block3').className = 'selected';
			//document.getElementById('block4').style.display='none';
			//document.getElementById('link_block4').className = '';
        }
		/*else if (itemtoshow == 'block4'){
            document.getElementById('block0').style.display='none';
			document.getElementById('link_block0').className = '';
            document.getElementById('block1').style.display='none';
			document.getElementById('link_block1').className = '';
            document.getElementById('block2').style.display='none';
			document.getElementById('link_block2').className = '';
            document.getElementById('block3').style.display='none';
			document.getElementById('link_block3').className = '';
			document.getElementById('block4').style.display='block';
			document.getElementById('link_block4').className = 'selected';
        }*/
    }