function showDiv(divID)
{
	document.getElementById(divID).style.display = 'block';
}

function showText(textID)
{
	document.getElementById(textID).style.display = 'inline';
}

function hide(itemID)
{
	document.getElementById(itemID).style.display = 'none';
}

document.getElementsByClassName = function(clsName){
    var retVal = new Array();
    var elements = document.getElementsByTagName("*");
    for(var i = 0;i < elements.length;i++){
        if(elements[i].className.indexOf(" ") >= 0){
            var classes = elements[i].className.split(" ");
            for(var j = 0;j < classes.length;j++){
                if(classes[j] == clsName)
                    retVal.push(elements[i]);
            }
        }
        else if(elements[i].className == clsName)
            retVal.push(elements[i]);
    }
    return retVal;
}

function hideItems()
{
   var items = document.getElementsByClassName('to_hide');
   for(i=0; i < items.length;i++)
   {
      if(items[i].className == 'to_hide'){
         items[i].className = 'to_show';
         hide(items[i].id);
      }
   } 
}

function toggleBlockDisplay(id)
{
	var item = document.getElementById(id);
	
	if(item.style.display == 'block') {
		item.style.display = 'none';
	} else if (item.style.display == 'none'){
		item.style.display = 'block';
	}
}

function switchPlusIcon(index)
{
	var item = document.getElementById('pdf_plus' + index);
	
	if(item.className == 'pdf_plus') {
		item.className = 'pdf_minus';
	} else {
		item.className = 'pdf_plus';
	}
}