function changeclass(strClassName,whichFunction,whichProperty,whichValue){	
	
	divs =  document.getElementsByTagName("div"); 
 	for (c=0; c<divs.length; c++) { 
 		if (document.getElementsByTagName("div")[c].className == strClassName)
 		{
			if(whichFunction == "setCSS"){	eval("document.getElementsByTagName('div')[c].style."+whichProperty+" = '"+whichValue+"'");}
		}
 	}
 }

function fontsize(strSize) {

  if (strSize == 'small'){
  	change('footer_copyright','setCSS','fontSize','12px');
  	change('text_right','setCSS','fontSize','12px');
  	change('textes','setCSS','fontSize','16px');
  	changeclass('subtitle_text','setCSS','fontSize','16px');
    changeclass('text_text','setCSS','fontSize','12px');
    changeclass('text_normal','setCSS','fontSize','12px');
    changeclass('text_link','setCSS','fontSize','12px');
    document.cookie = "font=small";
  }
  else if (strSize == 'medium'){
  	change('footer_copyright','setCSS','fontSize','16px');
  	change('text_right','setCSS','fontSize','16px');
  	change('textes','setCSS','fontSize','20px');
  	changeclass('subtitle_text','setCSS','fontSize','20px');
    changeclass('text_text','setCSS','fontSize','16px');
    changeclass('text_normal','setCSS','fontSize','16px');
    changeclass('text_link','setCSS','fontSize','16px');
    document.cookie = "font=medium";
  }
  else if (strSize == 'large'){
  	change('footer_copyright','setCSS','fontSize','20px');
  	change('text_right','setCSS','fontSize','20px');
  	change('textes','setCSS','fontSize','24px');
  	changeclass('subtitle_text','setCSS','fontSize','24px');
    changeclass('text_text','setCSS','fontSize','20px');
    changeclass('text_normal','setCSS','fontSize','20px');
    changeclass('text_link','setCSS','fontSize','20px');
    document.cookie = "font=large";
  }
}