var Terms_imgOn=0,
	 How_to_join_imgOn=0,
     How_to_pool_imgOn=0,
     Questions_imgOn=0;
     
 
 var TermsFileOn ="1l.png";
 var How_to_joinFileOn= "2l.png";
 var How_to_poolFileOn ="3l.png";
 var QuestionsFileOn ="4l.png";
 
 var TermsFileOff ="1.png";
 var How_to_joinFileOff= "2.png";
 var How_to_poolFileOff ="3.png";
 var QuestionsFileOff ="4.png";
 
 
  
 function DisplayText(text,ControlId)
  {
       r = document.getElementById(ControlId);
      //if (!r) { return false; }
      //if (typeof r.innerHTML == 'undefined') { return false; }

      // Update the text
      r.innerHTML = text;
    
  }


function changeImg(img_name,img_src) 
{
document[img_name].src=img_src;
}

function Click_Terms()
{
	if(!Terms_imgOn)
	{
		Terms_imgOn=1;
			if(How_to_join_imgOn)
			{
				How_to_join_imgOn=0;
				changeImg("How_to_join_img",How_to_joinFileOff);
			}
			 if(How_to_pool_imgOn)
			{
				How_to_pool_imgOn=0;
				changeImg("How_to_pool_img",How_to_poolFileOff);
			}
			 if(Questions_imgOn)
			{	
				Questions_imgOn=0;
				changeImg("Questions_img",QuestionsFileOff);
			}
			
			changeImg("Terms_img",TermsFileOn);
			DisplayText(Terms,"myDiv");
	
	}
}


function Click_How_to_join()
{
	if(!How_to_join_imgOn)
	{
		How_to_join_imgOn=1;
			if(Terms_imgOn)
			{
				Terms_imgOn=0;
				changeImg("Terms_img",TermsFileOff);
			}
			 if(How_to_pool_imgOn)
			{
				How_to_pool_imgOn=0;
				changeImg("How_to_pool_img",How_to_poolFileOff);
			}
			 if(Questions_imgOn)
			{	
				Questions_imgOn=0;
				changeImg("Questions_img",QuestionsFileOff);
			}
			
			
			changeImg("How_to_join_img",How_to_joinFileOn);
			DisplayText(How_to_join,"myDiv");
	
	}
}




function Click_How_to_pool()
{
	if(!How_to_pool_imgOn)
	{
		How_to_pool_imgOn=1;
			if(Terms_imgOn)
			{
				Terms_imgOn=0;
				changeImg("Terms_img",TermsFileOff);
			}
			 if(How_to_join_imgOn)
			{
				How_to_join_imgOn=0;
				changeImg("How_to_join_img",How_to_joinFileOff);
			}
			 if(Questions_imgOn)
			{	
				Questions_imgOn=0;
				changeImg("Questions_img",QuestionsFileOff);
			}
			
			
			changeImg("How_to_pool_img",How_to_poolFileOn);
			DisplayText(How_to_pool,"myDiv");
	
	}
}



function Click_Questions()
{
	if(!Questions_imgOn)
	{
		Questions_imgOn=1;
			if(Terms_imgOn)
			{
				Terms_imgOn=0;
				changeImg("Terms_img",TermsFileOff);
			}
			 if(How_to_pool_imgOn)
			{
				How_to_pool_imgOn=0;
				changeImg("How_to_pool_img",How_to_poolFileOff);
			}
			
			 if(How_to_join_imgOn)
			{
				How_to_join_imgOn=0;
				changeImg("How_to_join_img",How_to_joinFileOff);
			}
			
			
			changeImg("Questions_img",QuestionsFileOn);
			DisplayText(Questions,"myDiv");
	
	}
}