function customOnLoad()
{
    // Pre-Load images here.....
    //MM_preloadImages('/_layouts/images/centraltafeinternet/');
    loadFontChange();
    if (typeof(_spBodyOnLoadWrapper) != 'undefined') _spBodyOnLoadWrapper();
}

function customOnSubmit()
{
    if (typeof(_spFormOnSubmitWrapper) != 'undefined') return _spFormOnSubmitWrapper();
}

function loadFontChange() 
{
    var element = document.getElementById("wrapper");
    var fontSize = readCookie('fontCookie');
    var headerFontSize = readCookie('headerFontCookie');
    if (fontSize!=null)
    {
        element.style.fontSize = fontSize;
        HeaderTagFontSize(element, headerFontSize, 1)
    }
}

 function HeaderTagFontSize(element, fontsize, TagCount)
 {
    if(TagCount == 7)
    {
        return;
    } 
    var innerElement;
    switch(TagCount)
    {
      case 1:
            innerElement = element.getElementsByTagName("H1");          
            break;
      case 2:
            innerElement = element.getElementsByTagName("H2");          
            break;
      case 3:
            innerElement = element.getElementsByTagName("H3");          
            break;
      case 4:
            innerElement = element.getElementsByTagName("H4");          
            break;
      case 5:
            innerElement = element.getElementsByTagName("H5");          
            break;
      case 6:
            innerElement = element.getElementsByTagName("H6");          
            break;
      }
    TagCount++;
    if(innerElement != null && innerElement.length != 0 )
    {
        for(i=0;i <=  innerElement.length -1; i++)
        {
     	    innerElement(i).style.fontSize = fontsize;
 	    }
 	    HeaderTagFontSize(element,fontsize,TagCount);
    }
    HeaderTagFontSize(element,fontsize,TagCount);
}
  
          
function DecreaseFont()
{
    var element = document.getElementById("wrapper");
    var fontSize = "xx-small";
    var headerFontSize = "small";
    if(element.style.fontSize == "xx-large")
    {
        fontSize = "x-large";  
        headerFontSize = "xx-large";       
    }
    else if(element.style.fontSize == "x-large")
    {
        fontSize = "large";   
        headerFontSize = "x-large";       
   }
    else if(element.style.fontSize == "large")
    {
        fontSize = "medium";
        headerFontSize = "large"; 
        }
    else if(element.style.fontSize == "medium")
    {
        fontSize = "small";
        headerFontSize = "medium";
    }
    else if(element.style.fontSize == "small")
    {
        fontSize = "x-small";
        headerFontSize = "small";
    }
    else if(element.style.fontSize == "x-small" || element.style.fontSize == "xx-small")
    {
        fontSize = "xx-small";  
        headerFontSize = "x-small";
    }
        
    element.style.fontSize = fontSize;
    createCookie('fontCookie',fontSize,0);    
    createCookie('headerFontCookie',headerFontSize,0);       
    HeaderTagFontSize(element, headerFontSize, 1)                                                       

}
	
function IncreaseFont()
{
    var element = document.getElementById("wrapper");
	var fontSize = "small";
	var headerFontSize = "medium";
    if(element.style.fontSize == "xx-small")
    {
        fontSize = "x-small";
        headerFontSize = "small";
         }
    else if(element.style.fontSize == "x-small")
    {
        fontSize = "small";
        headerFontSize = "medium";
         }
    else if(element.style.fontSize == "small")
    {
        fontSize = "medium";      
        headerFontSize = "large";      
         }
    else if(element.style.fontSize == "medium")
    {
        fontSize = "large";
        headerFontSize = "x-large";
         }
    else if(element.style.fontSize == "x-large" || element.style.fontSize == "large")
    {
        fontSize = "x-large";   
        headerFontSize = "xx-large";           
    }                
    element.style.fontSize = fontSize;
    createCookie('fontCookie',fontSize,0);
    createCookie('headerFontCookie',headerFontSize,0);
    HeaderTagFontSize(element, headerFontSize, 1)
}

function createCookie(name,value,days) 
{
    if (days) 
    {
	    var date = new Date();
	    date.setTime(date.getTime()+(days*24*60*60*1000));
	    var expires = "; expires="+date.toGMTString();
    }
    else var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) 
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) 
{
	createCookie(name,"",-1);
}