/*
	APERIO JAVASCRIPT
	CREATED: 21.05.07
	MODIFIED: 13.09.07
	AUTHOR: ANDY FIELD
*/

/* TOOGLE
******************************************/

function toggleLayer( whichLayer )
{
	var elem, vis;
  	if( document.getElementById ) // this is the way the standards work
    	elem = document.getElementById( whichLayer );
	  else if( document.all ) // this is the way old msie versions work
		elem = document.all[whichLayer];
	else if( document.layers ) // this is the way nn4 works
		elem = document.layers[whichLayer];
	vis = elem.style;
  // if the style.display value is blank we try to figure it out here
	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
		vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
	vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}

/* CONTACT FORM
******************************************/

function MakeContact(frm) 
	
	{
		if(frm.txtName.value == "") return setFocus(frm.txtName, "Please enter your name");
		if(frm.txtEmail.value == "") return setFocus(frm.txtEmail, "Please enter an e-mail address");
		if(frm.txtEmail.value.indexOf("@") == -1) return setFocus(frm.txtEmail, "Please enter a valid e-mail address");
		if(frm.txtEmail.value.indexOf(".") == -1) return setFocus(frm.txtEmail, "Please enter a valid e-mail address");		
		return true;
	}

	function setFocus(f, message)
	{
		if( message != "")
		{
			alert(message);
		}
		f.focus();
		return false;
	}

/* EXTERNAL LINK HANDLER
******************************************/

function externalLinks() { 
	if (!document.getElementsByTagName) return; 
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i<anchors.length; i++) { 
		var anchor = anchors[i]; 
		if (anchor.getAttribute("href") && 
	anchor.getAttribute("rel") == "external") 
	anchor.target = "_blank"; 
	} 
}

/* MULTIPLE ONLOAD HANDLER
******************************************/

function multipleOnload()
{
	externalLinks();
}
window.onload = multipleOnload;