function folio_new (id,div) {
     var id, div
	 if (id.id == 'inactive_link' && div == 'new') {
	     id.id = ''
		 document.getElementById('portfolio_new').style.visibility = 'visible'
		 document.getElementById('portfolio_pop').style.visibility = 'hidden'
		 document.getElementById('active_link').id = 'inactive_link'
		 id.id = 'active_link'
		}
	 else if (id.id == 'inactive_link' && div == 'pop') {
	     id.id = ''
		 document.getElementById('portfolio_new').style.visibility = 'hidden'
		 document.getElementById('portfolio_pop').style.visibility = 'visible'
		 document.getElementById('active_link').id = 'inactive_link'
		 id.id = 'active_link'
		}
    }
function show_content (id,div) {
     var id, div
	 if (id.id == 'inactive_h1_link' && div == '1') {
	     id.id = ''
		 document.getElementById('content_text_2').style.display = 'none'
		 document.getElementById('content_text_3').style.display = 'none'
		 document.getElementById('content_text_4').style.display = 'none'
	     document.getElementById('content_text_1').style.display = 'block'
		 document.getElementById('active_h1_link').id = 'inactive_h1_link'
		 id.id = 'active_h1_link'
		}
	 else if (id.id == 'inactive_h1_link' && div == '2') {
	     id.id = ''
		 document.getElementById('content_text_1').style.display = 'none'
	     document.getElementById('content_text_3').style.display = 'none'
		 document.getElementById('content_text_4').style.display = 'none'
		 document.getElementById('content_text_2').style.display = 'block'
		 document.getElementById('active_h1_link').id = 'inactive_h1_link'
		 id.id = 'active_h1_link'
		}
	else if (id.id == 'inactive_h1_link' && div == '3') {
	     id.id = ''
		 document.getElementById('content_text_1').style.display = 'none'
		 document.getElementById('content_text_2').style.display = 'none'
	     document.getElementById('content_text_4').style.display = 'none'
	     document.getElementById('content_text_3').style.display = 'block'
		 document.getElementById('active_h1_link').id = 'inactive_h1_link'
		 id.id = 'active_h1_link'
		}
	else if (id.id == 'inactive_h1_link' && div == '4') {
	     id.id = ''
		 document.getElementById('content_text_1').style.display = 'none'
		 document.getElementById('content_text_2').style.display = 'none'
		 document.getElementById('content_text_3').style.display = 'none'
		 document.getElementById('content_text_4').style.display = 'block'
		 document.getElementById('active_h1_link').id = 'inactive_h1_link'
		 id.id = 'active_h1_link'
		}
    }
function display_div (id, body_width) {
     var id, body_width
     if (document.getElementById('main').offsetWidth > body_width) document.getElementById(id).style.display = "block"
	 else document.getElementById(id).style.display = "none"
    }

function display_td (id, body_width) {
    var id, body_width
    if (document.getElementById('main').offsetWidth > body_width) document.getElementById(id).style.display = "table-cell"
	 else document.getElementById(id).style.display = "none"
   }



function email_valid(email)
{
    return /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/.test(email);
}