function show_row(num){

	// If the element is hidden
	if( document.getElementById(num).style.display == 'none') {
	
		/*  Show the row */

		document.getElementById(num).style.display = '';
		document.getElementById('extra'+ num).style.display = '';

		if(document.getElementById('coursenumber' + num)) {
			document.getElementById('coursenumber' + num).style.fontWeight ='bold';
			document.getElementById('coursenumber' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('title' + num)) {
			document.getElementById('title' + num).style.fontWeight ='bold';
			document.getElementById('title' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('flavour' + num)) {
			document.getElementById('flavour' + num).style.fontWeight ='bold';
			document.getElementById('flavour' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('ponderation' + num)) {
			document.getElementById('ponderation' + num).style.fontWeight ='bold';
			document.getElementById('ponderation' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('hours' + num)) {
			document.getElementById('hours' + num).style.fontWeight ='bold';
			document.getElementById('hours' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('name' + num)) {
			document.getElementById('name' + num).style.fontWeight ='bold';
			document.getElementById('name' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('office' + num)) {
			document.getElementById('office' + num).style.fontWeight ='bold';
			document.getElementById('office' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('local' + num)) {
			document.getElementById('local' + num).style.fontWeight ='bold';
			document.getElementById('local' + num).style.backgroundColor = 'E1E1E1';
		}
		
		if(document.getElementById('email' + num)) {
			document.getElementById('email' + num).style.fontWeight ='bold';
			document.getElementById('email' + num).style.backgroundColor = 'E1E1E1';
		}
	} // End if
} // End show_row(num)

function hide_row(num) {

	// If the element's display property is anything other than 'none'
	if( document.getElementById(num).style.display == '') {
		
		/* Hide the row */

		document.getElementById(num).style.display = 'none';
		document.getElementById('extra' + num).style.display = 'none';

		if(document.getElementById('coursenumber' + num)) {
			document.getElementById('coursenumber' + num).style.fontWeight ='normal';
			document.getElementById('coursenumber' + num).style.backgroundColor = 'FFFFFF';
		}

		if(document.getElementById('title' + num)) {
			document.getElementById('title' + num).style.fontWeight ='normal';
			document.getElementById('title' + num).style.backgroundColor = 'FFFFFF';
		}
		
		if(document.getElementById('flavour' + num)) {
			document.getElementById('flavour' + num).style.fontWeight ='normal';
			document.getElementById('flavour' + num).style.backgroundColor = 'FFFFFF';
		}

		if(document.getElementById('ponderation' + num)) {
			document.getElementById('ponderation' + num).style.fontWeight ='normal';
			document.getElementById('ponderation' + num).style.backgroundColor = 'FFFFFF';
		}

		if(document.getElementById('hours' + num)) {
			document.getElementById('hours' + num).style.fontWeight ='normal';
			document.getElementById('hours' + num).style.backgroundColor = 'FFFFFF';
		}
		
		if(document.getElementById('name' + num)) {
			document.getElementById('name' + num).style.fontWeight ='normal';
			document.getElementById('name' + num).style.backgroundColor = 'FFFFFF';
		}
		
		if(document.getElementById('office' + num)) {
			document.getElementById('office' + num).style.fontWeight ='normal';
			document.getElementById('office' + num).style.backgroundColor = 'FFFFFF';
		}
		
		if(document.getElementById('local' + num)) {
			document.getElementById('local' + num).style.fontWeight ='normal';
			document.getElementById('local' + num).style.backgroundColor = 'FFFFFF';
		}
		
		if(document.getElementById('email' + num)) {
			document.getElementById('email' + num).style.fontWeight ='normal';
			document.getElementById('email' + num).style.backgroundColor = 'FFFFFF';
		}
	} // End if
} // End hide_row(num_rows)

function showAll(num_rows) {
	for(var num = 1; num < num_rows+1; num++) {
		show_row(num);
	}
} // End showAll(num_rows)

function hideAll(num_rows) {
	for(var num = 1; num < num_rows+1; num++) {
		hide_row(num);
	}
} // End hideAll(num_rows)

function showOrHideRow (num) {
	
	if( document.getElementById(num).style.display == 'none') {
		show_row(num);
	}
	else {
		hide_row(num);
	}
	
} // End showHideRow (num)