var min=11;
var max=12;
var el = new Array('button','td');
function increaseFontSize() {
   var p = document.getElementsByTagName('*');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 11;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('*');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 11;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   }   
}

function printing(){
var divs = new Array(document.getElementById('dummy'));
for(i=0;i<divs.length;i++) {
	divs[i].style.display='none';
    }
document.write('<link rel="stylesheet" type"text/css" href="style_print.css" media="screen"><link rel="stylesheet" type"text/css" href="style_print.css" media="print"><table><tr><td></td></tr><tr><td>'+document.getElementById("main_content").innerHTML+'</td></tr></table>');
}