function makeWhite(obj) {
   	obj.style.color = "#FFFFFF";
}

function makeGrey(obj) {
   	obj.style.color = "#B0B0B0";
}
  
function showHideAnswer()
	{
		var numericID = this.id.replace(/[^\d]/g,'');
		var obj = document.getElementById('a' + numericID);
		if(obj.style.display=='block'){
			obj.style.display='none';
		}else{
			obj.style.display='block';
		}		
	}
	
	
function initShowHideContent()
	{
		var divs = document.getElementsByTagName('DIV');
		for(var no=0;no<divs.length;no++){
			if(divs[no].className=='p_title'){
				divs[no].onclick = showHideAnswer;
			}	
			
		}	
	}
	
window.onload = initShowHideContent;