function checkthis()
    {
        if (document.form1.checkbox.checked == true)
        {
		//alert("checked");
		document.form1.business.readOnly=false; document.form1.address.readOnly=false; document.form1.zip.readOnly=false; document.form1.address.readOnly=false; document.form1.city.readOnly=false; document.form1.state.readOnly=false;
        }
		else 
		{
		document.form1.business.readOnly=true; document.form1.address.readOnly=true; document.form1.zip.readOnly=true; document.form1.address.readOnly=true; document.form1.city.readOnly=true; document.form1.state.readOnly=true;
		}
    }