function showfonts()
{
	fontsitem = document.getElementsByClassName('fonts');
	for ( var x = 0; x < fontsitem.length ; x++ ) { 
		fontsitem[x].style.display = 'block';
	}	
	
}
function externaliseLinks() { 
	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"; 
		}
	} 
} 
function PostBack(e, objField, objButton) {
	if (e.which || e.keyCode) {
		if ((e.which == 13) || (e.keyCode == 13)) {
			objField.blur();
			document.getElementById(objButton).click();
			return false;
		}
	} 
	else {
		return true;
	}
}
function hideAnswer() {
	var answer = document.getElementsByClassName('answer');
	for ( var x = 0; x < answer.length ; x++ ) { 
			answer[x].style.display = "none";	
	}	
	var btnclose = document.getElementsByClassName('btnclose');
	for ( var x = 0; x < answer.length ; x++ ) { 
			btnclose[x].style.display = "block";
	}	
	var btnview = document.getElementsByClassName('btnview');
	for ( var x = 0; x < answer.length ; x++ ) { 
			btnview[x].style.display = "block";
	}	
}
function load() {
	externaliseLinks();
	showfonts();
	hideAnswer();
}

window.onload = load;

var min=8;
var max=18;
function increaseFontSize() {
   var p = document.getElementsByClassName('font');
   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"
   }
   var head = document.getElementsByClassName('fonthead');
   for(i=0;i<head.length;i++) {
      if(head[i].style.fontSize) {
         var s = parseInt(head[i].style.fontSize.replace("px",""));
      } else {
         var s = 16;
      }
      if(s!=max) {
         s += 1;
      }
      head[i].style.fontSize = s+"px"
   }
   var intro = document.getElementsByClassName('intro');
   for(i=0;i<intro.length;i++) {
      if(intro[i].style.fontSize) {
         var s = parseInt(intro[i].style.fontSize.replace("px",""));
      } else {
         var s = 14;
      }
      if(s!=max) {
         s += 1;
      }
      intro[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByClassName('font');
   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"
   }   
   var head = document.getElementsByClassName('fonthead');
   for(i=0;i<head.length;i++) {
      if(head[i].style.fontSize) {
         var s = parseInt(head[i].style.fontSize.replace("px",""));
      } else {
         var s = 16;
      }
      if(s!=min) {
         s -= 1;
      }
      head[i].style.fontSize = s+"px"
   }  
   var intro = document.getElementsByClassName('intro');
   for(i=0;i<intro.length;i++) {
      if(intro[i].style.fontSize) {
         var s = parseInt(intro[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      intro[i].style.fontSize = s+"px"
   }  
}