//CAMBIO DE TAMAŅO DE LETRA
var currentFontSize = 'medium';
function changeSizeLetter(mensaje){
	//Si ya estamos en el tipo de fuente seleccionado no hacemos nada
	if(currentFontSize == mensaje){
		return true;
	}
	currentFontSize = mensaje;
	var mytags = new Array();
	mytags[0] = "div";
	mytags[1] = "span";
		mytags[2] = "input";
    mytags[3] = "p";
	mytags[4] = "a";
	mytags[5] = "ul";
	mytags[6] = "li";
	mytags[7] = "ol";
	mytags[9] = "table";
	mytags[10] = "td";
	mytags[11] = "tr";
	mytags[12] = "form";
	mytags[13] = "select";

 	var nameClasses = new Array();
    var aux  = "";
	var aux2 = "";

	if (mensaje == 'small') {                     
		for(j=0; j<mytags.length; j=j+1){
			nameClasses = document.getElementsByTagName(mytags[j]);
            for (i=0; i < nameClasses.length; i++) {
            	//Si tiene el atributo class definido
				if(nameClasses[i].className.length > 0){
                	if(nameClasses[i].className.indexOf("_big") == -1){
                    	var palabras = nameClasses[i].className.split(" ");
                        aux2 = " ";
						for(k=0; k<palabras.length; k++){
							aux2 = aux2 + palabras[k] + "_small";
							if(k != palabras.length-1){
								aux2 = aux2 + " ";
							}
						} 
                        nameClasses[i].className = nameClasses[i].className + aux2;
					}
					else {
						var palabras = nameClasses[i].className.split(" ");
                        aux = "";
                        for(k=0; k<palabras.length/2; k++){
							aux = aux + palabras[k] + " ";							        
						}
						for(k=palabras.length/2; k<palabras.length; k++){
						 	aux = aux + palabras[k].replace("_big","_small");
							if(k != palabras.length-1){
          						aux = aux + " ";
							}
						}
						nameClasses[i].className = aux;
					}
				}
			}
		}
	}

	else if(mensaje == 'medium'){
		for(j=0; j<mytags.length; j=j+1){  
                	nameClasses = document.getElementsByTagName(mytags[j]);
                        for (i=0; i < nameClasses.length; i++) {
                        	if(nameClasses[i].className.length > 0){
                                        //alert(nameClasses[i].className);
					var palabras = nameClasses[i].className.split(" ");
                                        aux2 = "";
					for(k=0; k<palabras.length/2; k++){
						if(k == (palabras.length/2) -1){
							aux2 = aux2 + palabras[k];
						}
						else{
                                                	aux2 = aux2 + palabras[k] + " ";
                                                }
					} 
					nameClasses[i].className = aux2;
                                        //alert(aux2);                                        
				}
			}
		}
			
	}
	else if(mensaje == 'big'){
		for(j=0; j<mytags.length; j=j+1){ 
                	nameClasses = document.getElementsByTagName(mytags[j]);
                        for (i=0; i < nameClasses.length; i++) {
				if(nameClasses[i].className.length > 0){
                                        if(nameClasses[i].className.indexOf("_small") == -1){
                                        	var palabras = nameClasses[i].className.split(" ");
                                                aux2 = " ";
						for(k=0; k<palabras.length; k++){
							if(k == palabras.length-1){
          							aux2 = aux2 + palabras[k] + "_big";
                                                        }
                                                        else{
								aux2 = aux2 + palabras[k] + "_big" + " ";
							}
						} 
                                                  
   						nameClasses[i].className = nameClasses[i].className + aux2;                                             
                                        }

					else{
						var palabras = nameClasses[i].className.split(" ");
                                                aux = "";

						for(k=0; k<palabras.length/2; k++){
							aux = aux + palabras[k] + " ";							        
						}
                        for(k=palabras.length/2; k<palabras.length; k++){
							if(k == palabras.length-1){
          						aux = aux + palabras[k].replace("_small","_big");
							}
                            else{
								aux = aux + palabras[k].replace("_small","_big") + " ";
							}
						}
       					nameClasses[i].className = aux;
					}
				}
			}
		}
	}
	return true;
}