function mark(input) {input.focus();input.select();}
	function chgtab(num) {document.getElementById('box' + num).style.display = 'block';document.getElementById('tab' + num).className = 'seltab';if (num != 1) 
	{ document.getElementById('tab1').className = 'tab'; document.getElementById('box1').style.display = 'none' }
	if (num != 2) { document.getElementById('tab2').className = 'tab'; document.getElementById('box2').style.display = 'none' }
	if (num != 3) { document.getElementById('tab3').className = 'tab'; document.getElementById('box3').style.display = 'none' }
	}