var min = 8;
var max = 18;
function increaseFontSize() {
    var divs = document.getElementById('_ctl0_PlMainMiddle_dvPagesContent').getElementsByTagName('div');
    for (i = 0; i < divs.length; i++) {
        if (divs[i].style.fontSize) {
            var s1 = parseInt(divs[i].style.fontSize.replace("px", ""));
        } else {
            var s1 = 12;
        }
        if (s1 != max) {
            s1 += 1;
        }
        divs[i].style.fontSize = s1 + "px"
    }

    var uls = document.getElementById('_ctl0_PlMainMiddle_dvPagesContent').getElementsByTagName('a');
    for (i = 0; i < uls.length; i++) {
        if (uls[i].style.fontSize) {
            var s2 = parseInt(uls[i].style.fontSize.replace("px", ""));
        } else {
            var s2 = 12;
        }
        if (s2 != max) {
            s2 += 1;
        }
        uls[i].style.fontSize = s2 + "px"
    }
    var tables = document.getElementById('_ctl0_PlMainMiddle_dvPagesContent').getElementsByTagName('td');
    for (i = 0; i < tables.length; i++) {
        if (tables[i].style.fontSize) {
            var s3 = parseInt(tables[i].style.fontSize.replace("px", ""));
        } else {
            var s3 = 12;
        }
        if (s3 != max) {
            s3 += 1;
        }
        tables[i].style.fontSize = s3 + "px"
    }
}
function decreaseFontSize() {
    var divs = document.getElementById('_ctl0_PlMainMiddle_dvPagesContent').getElementsByTagName('div');
    for (i = 0; i < divs.length; i++) {
        if (divs[i].style.fontSize) {
            var s1 = parseInt(divs[i].style.fontSize.replace("px", ""));
        } else {
            var s1 = 12;
        }
        if (s1 != min) {
            s1 -= 1;
        }
        divs[i].style.fontSize = s1 + "px"
    }

    var uls = document.getElementById('_ctl0_PlMainMiddle_dvPagesContent').getElementsByTagName('a');
    for (i = 0; i < uls.length; i++) {
        if (uls[i].style.fontSize) {
            var s2 = parseInt(uls[i].style.fontSize.replace("px", ""));
        } else {
            var s2 = 12;
        }
        if (s2 != min) {
            s2 -= 1;
        }
        uls[i].style.fontSize = s2 + "px"
    }

    var tables = document.getElementById('_ctl0_PlMainMiddle_dvPagesContent').getElementsByTagName('td');
    for (i = 0; i < tables.length; i++) {
        if (tables[i].style.fontSize) {
            var s3 = parseInt(tables[i].style.fontSize.replace("px", ""));
        } else {
            var s3 = 12;
        }
        if (s3 != min) {
            s3 -= 1;
        }
        tables[i].style.fontSize = s3 + "px"
    }
}