function advcontactform()
	{
	var iMaxValue = 600;
	var iMinValue = 10;
		
	if (document.advcontact.style.visibility == 'visible'){
		document.advcontact.style.visibility = 'hidden';
		document.formblock.height = iMinValue;
		}
	else{
        document.advcontact.style.visibility = 'visible'
        document.formblock.height = iMaxValue;
		}
	}