function changePic1( x)  /* for graphics page */
{   
	if(!document.getElementById) return false;
	
	if(!document.getElementById("show_window") ) return false;
	
	var elem = document.getElementById("show_window");
	switch(x)
	  {
		  case 1:
		    {
			  elem.style.backgroundImage="url(images/flyingguitars.jpg)";
			  break;  
		    }
		  case 2:
		    {
			  elem.style.backgroundImage="url(images/deathmask.jpg)";
			  break;  
		    }
		  case 3:
		    {
			   elem.style.backgroundImage="url(images/bloodwork.jpg)";
			   break; 
		    }
		  case 4:
		    {
			   elem.style.backgroundImage="url(images/ballance.jpg)";
			   break; 
		    }
		  case 5:
		    {
			   elem.style.backgroundImage="url(images/friar.jpg)"; 
		    }  
	  }  /* end switch */
	  
	return true;
		
}  /* end function */  

function changePic2( x)  /* for Photo page */
{   
	if(!document.getElementById) return false;
	
	if(!document.getElementById("show_window") ) return false;
	
	var elem = document.getElementById("show_window");
	switch(x)
	  {
		  case 1:
		    {
			  elem.style.backgroundImage="url(images/plane.jpg)";
			  break;  
		    }
		  case 2:
		    {
			  elem.style.backgroundImage="url(images/collings.jpg)";
			  break;  
		    }
		  case 3:
		    {
			   elem.style.backgroundImage="url(images/sky.jpg)";
			   break; 
		    }
		  case 4:
		    {
			   elem.style.backgroundImage="url(images/palace.jpg)";
			   break; 
		    }
		  case 5:
		    {
			   elem.style.backgroundImage="url(images/jam.jpg)"; 
		    }  
	  }  /* end switch */
	  
	return true;
		
}  /* end function */ 



function changePic3( x)  /* for Illus page */
{   
	if(!document.getElementById) return false;
	
	if(!document.getElementById("show_window") ) return false;
	
	var elem = document.getElementById("show_window");
	switch(x)
	  {
		  case 1:
		    {
			  elem.style.backgroundImage="url(images/david.jpg)";
			  break;  
		    }
		  case 2:
		    {
			  elem.style.backgroundImage="url(images/spinner.jpg)";
			  break;  
		    }
		  case 3:
		    {
			   elem.style.backgroundImage="url(images/watt.jpg)";
			   break; 
		    }
		  case 4:
		    {
			   elem.style.backgroundImage="url(images/western.jpg)";
			   break; 
		    }
		  case 5:
		    {
			   elem.style.backgroundImage="url(images/xmas.jpg)"; 
		    }  
	  }  /* end switch */
	  
	return true;
		
}  /* end function */