// start of picture changer
function pixrotate() 
{	
	var num = Math.round(Math.random() * 6);
	var showpix = 'img'+num;
	document.getElementById(showpix).style.display='block';
}


// font size changer from http://www.white-hat-web-design.co.uk/articles/js-fontsize.php
var min=8;
var max=18;
function increaseFontSize() {
   var p = document.getElementsByTagName('body');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('body');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   }   
}


// stylesheet switcher exerpted from http://www.spoono.com/javascript/tutorials/tutorial.php?id=18
function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
        document.getElementById('emailpage').style.display = 'none';

    }
  }
  scroll(0,0);
}


// show/hide
function SHflip(key) {
	var imgID = key + '_img'; 
	var contentID = key + '_content'; 
	if (document.getElementById(contentID).style.display == 'none') {
	document.getElementById(imgID).src ='images/hide.gif';
	document.getElementById(contentID).style.display = 'block';
	} 
	else {
	document.getElementById(imgID).src = 'images/show.gif';
	document.getElementById(contentID).style.display = 'none';
	}
}


// email page show/hide flip
function emailpageshowhide() {
	if (document.getElementById('emailpage').style.display == 'none') {										document.getElementById('emailpage').style.display = 'block';
	document.getElementById('emlform').style.display = 'block';
	}
	else {
	document.getElementById('emailpage').style.display = 'none';
	document.getElementById('formdone').style.display = 'none';
	}
}

// populate email this page form
function emlpopulate() {
	document.getElementById('emlpage').value = document.title;
	document.getElementById('emllink').value = document.URL;
	}