var h3Size = '16px';
var spanSize = '14px';
var textSize = '14px';

function letterSize(f){
	if(f == 1){
		if(document.getElementById('insideMainText')){
			contentDiv = document.getElementById('insideMainText');
		}else if(document.getElementById('mainTextHome')){
			contentDiv = document.getElementById('mainTextHome');
		}

		h3Tags = contentDiv.getElementsByTagName('h3');
		spanTags = contentDiv.getElementsByTagName('span');

		if(h3Size == '14px'){
			h3Size = '16px';
		}else if(h3Size == '16px'){
			h3Size = '18px';
		}

		for(i=0;i<h3Tags.length;i++){
				h3Tags[i].style.fontSize = h3Size;
		}

		if(spanSize == '12px'){
			spanSize = '14px';
		}else if(spanSize == '14px'){
			spanSize = '16px';
		}

		for(i=0;i<spanTags.length;i++){
				if(spanTags[i].className == 'textZostavax'){
						spanTags[i].style.fontSize = spanSize;
				}
		}

		if(textSize == '12px'){
			contentDiv.style.fontSize = '14px';
			textSize = '14px';
		}else if(textSize == '14px'){
			contentDiv.style.fontSize = '16px';
			textSize = '16px';
		}
	}
	if(f == 2){
		if(document.getElementById('insideMainText')){
			contentDiv = document.getElementById('insideMainText');
		}else if(document.getElementById('mainTextHome')){
			contentDiv = document.getElementById('mainTextHome');
		}
		
		h3Tags = contentDiv.getElementsByTagName('h3');
		spanTags = contentDiv.getElementsByTagName('span');

        if(h3Size == '18px'){
			h3Size = '16px';
		}else if(h3Size == '16px'){
			h3Size = '14px';
		}

		for(i=0;i<h3Tags.length;i++){
				h3Tags[i].style.fontSize = h3Size;
		}

        if(spanSize == '16px'){
			spanSize = '14px';
		}else if(spanSize == '14px'){
			spanSize = '12px';
		}
		for(i=0;i<spanTags.length;i++){
				if(spanTags[i].className == 'textZostavax'){
						spanTags[i].style.fontSize = spanSize;
				}
		}

		if(textSize == '16px'){
			contentDiv.style.fontSize = '14px';
			textSize = '14px';
		}else if(textSize == '14px'){
			contentDiv.style.fontSize = '12px';
			textSize = '12px';
		}
	}
}

function printThisPage() {
	printWin = window.open('print.html','','');
}

function imgOn(thisImg, imgType) {
    document.getElementById(thisImg).src = "images/" + thisImg + "-on." + imgType;
}

function imgOff(thisImg, imgType) {
    document.getElementById(thisImg).src = "images/" + thisImg + "-off." + imgType;
}