function emptyfield (doingthis, fieldname,defaultvalue)
{
if (doingthis == "blur")
{
	if (document.getElementById(fieldname).value == "")
	{
		document.getElementById(fieldname).value = defaultvalue
	}
}
else
{
	if (document.getElementById(fieldname).value == defaultvalue)
	{
		document.getElementById(fieldname).value = ""
	}
}

}

function showprodimage(thisimage)
{
	document.getElementById("prodimagesrc").src=thisimage
	showdiv("prodimage")
}

function showlargeproduct(thisimg,thistitle)
{
	//scrollX = event.clientX + document.body.scrollLeft;
 //scrollY = event.clientY + document.body.scrollTop
	//heightY = event.clientY + document.body.scrollHeight
 imgtop = document.getElementById("largeimg").style.top
	//alert(imgtop)
	document.getElementById("imagetitle").innerHTML = thistitle
	document.getElementById("largeimgid").src=thisimg
	
	//document.getElementById("largeimg").style.top =  - 10

	showdiv('largeimg')
}

function quick_link(thisvalue)
{
  if (thisvalue != "")
  {
  	window.location=thisvalue;
  }
}

function showdiv(thisdiv,showhide)
{

  if (document.getElementById(thisdiv))
  {
  thisparent = ""
  }
  else
  {
		if (parent.document.getElementById(thisdiv))
    {
    	thisparent = "parent."
    }
		else
		{
			if (top.document.getElementById(thisdiv))
      {
      	thisparent = "top."
      }
		}
  }
	
	//	alert(thisdiv + " - " + showhide)
	if (showhide != null && showhide != "")
  	{
    	if (eval(thisparent+"document.getElementById('"+thisdiv+"') != null") )
    		{
    			eval(thisparent+"document.getElementById('"+thisdiv+"').style.display = '"+showhide+"'")
    		}
    }
  else
    {
		
      if (eval(thisparent+"document.getElementById('"+thisdiv+"').style.display == 'block' "))
      	{
					eval(thisparent+"document.getElementById('"+thisdiv+"').style.display = 'none' ")
      	}
      else
      	{	
				eval(thisparent+"document.getElementById('"+thisdiv+"').style.display = 'block' ")
      	}
    }

}

function CreateBookmarkLink() {
	title = "Easy Eyecare"; 
	url = "http://www.easyeyecare.co.uk/";
	
	if (window.sidebar) { // Mozilla Firefox Bookmark
		window.sidebar.addPanel(title, url,"");
	} else if ( window.external ) { // IE Favorite
		window.external.AddFavorite( url, title); 
	} else if (window.opera && window.print) { // Opera Hotlist
		return true; 
	}
}