var bw_flag="true";
var hor_flag="true";
var vert_flag="true";
var inv_flag="true";
var xray_flag="true";
function setBW()
	{		
		if(bw_flag)
			{
				document.all.pic.style.filter = "gray";
			}
		else
			{
				document.all.pic.style.filter = "";
			}
			bw_flag=!bw_flag;
	}
function flip_h()
	{		
		if(hor_flag)
			{
				document.all.pic.style.filter = "fliph";
			}
		else
			{
				document.all.pic.style.filter = "";
			}
			hor_flag=!hor_flag;
	}
function flip_v()
	{		
		if(vert_flag)
			{
				document.all.pic.style.filter = "flipv";
			}
		else
			{
				document.all.pic.style.filter = "";
			}
			vert_flag=!vert_flag;
	}	
function invert_img()
	{		
		if(inv_flag)
			{
				document.all.pic.style.filter = "invert";
			}
		else
			{
				document.all.pic.style.filter = "";
			}
			inv_flag=!inv_flag;
	}
function xray_img()
	{		
		if(xray_flag)
			{
				document.all.pic.style.filter = "xray";
			}
		else
			{
				document.all.pic.style.filter = "";
			}
			xray_flag=!xray_flag;
	}