function img_hide(chk)
{
var H="",L="",T="";
var win = window.document.frmproduct;
for(i=0;i<win.elements.length;i++)
{
	if(win.elements[i].type=="radio" && win.elements[i].checked==true)
	{
		if(win.elements[i].id=="chkCottage")
		{
		H=win.elements[i].value;
		}
		if(win.elements[i].id=="chkLiquid")
		{
		L=win.elements[i].value;
		}
		if(win.elements[i].id=="chktemperature")
		{
		T=win.elements[i].value;
		}
		
	}
}


if(H!="")
{
	if(L!="")
	{
		if(T!="")
		{
			if(H=="1 Person Household")	
			{
				if(L=="Electric")
				{
					if(T=="Yes")
					{
						img_hide_all_gas();
						img_show_all_electric();
						document.getElementById('GL-4').style.visibility = 'hidden';
						document.getElementById('GL-6').style.visibility = 'hidden';
						document.getElementById('AE115').style.visibility = 'hidden';
						document.getElementById('AE125').style.visibility = 'hidden';
					}
					else if(T=="No")
					{
						img_hide_all_gas();
						img_hide_all_electric();
						document.getElementById('AE115').style.visibility = 'visible';
						document.getElementById('AE125').style.visibility = 'visible';
					}
					else if(T=="Not sure")
					{
						img_hide_all_gas();
						img_show_all_electric();
						document.getElementById('GL-4').style.visibility = 'hidden';
						document.getElementById('GL-6').style.visibility = 'hidden';

					}
				}
				else if(L=="LP" || L=="NG")
				{
					img_hide_all_gas();
					document.getElementById('1600H').style.visibility = 'visible';
					document.getElementById('1600P').style.visibility = 'visible';
					document.getElementById('125BO').style.visibility = 'visible';
					document.getElementById('1600PS').style.visibility = 'visible';
					document.getElementById('125FX').style.visibility = 'visible';
					img_hide_all_electric();
				}
			}	
		}
		else
		{
			if(H=="Cottage/Camp")	
			{
				if(L=="LP" || L=="NG")
				{
				img_hide_all_gas();
				document.getElementById('1000P').style.visibility = 'visible';
				document.getElementById('1600H').style.visibility = 'visible';
				document.getElementById('1600P').style.visibility = 'visible';
				document.getElementById('125BO').style.visibility = 'visible';
				document.getElementById('1600PS').style.visibility = 'visible';
				document.getElementById('125FX').style.visibility = 'visible';
				document.getElementById('2400EO').style.visibility = 'visible';
				document.getElementById('2400ES').style.visibility = 'visible';
				document.getElementById('2700ES').style.visibility = 'visible';
				img_hide_all_electric();			
				}
				if(L=="Electric")
				{
				img_hide_all_gas();
				img_hide_all_electric();
				document.getElementById('AE115').style.visibility = 'visible';
				document.getElementById('AE125').style.visibility = 'visible';
				}
			}
			
			else if(H=="1 Person Household")	
			{
				if(L=="LP" || L=="NG")
				{
				img_hide_all_gas();
				document.getElementById('1000P').style.visibility = 'visible';
				document.getElementById('1600H').style.visibility = 'visible';
				document.getElementById('1600P').style.visibility = 'visible';
				document.getElementById('125BO').style.visibility = 'visible';
				document.getElementById('1600PS').style.visibility = 'visible';
				document.getElementById('125FX').style.visibility = 'visible';
				document.getElementById('2400EO').style.visibility = 'visible';
				document.getElementById('2400ES').style.visibility = 'visible';
				document.getElementById('2700ES').style.visibility = 'visible';
				img_hide_all_electric();			
				}
				if(L=="Electric")
				{
				img_hide_all_gas();
				img_hide_all_electric();
				document.getElementById('AE115').style.visibility = 'visible';
				document.getElementById('AE125').style.visibility = 'visible';
				}
			}
			
			else if(H=="2 Person Household")	
			{
				if(L=="LP" || L=="NG")
				{
				img_hide_all_gas();
				document.getElementById('1000P').style.visibility = 'visible';
				document.getElementById('1600H').style.visibility = 'visible';
				document.getElementById('1600P').style.visibility = 'visible';
				document.getElementById('125BO').style.visibility = 'visible';
				document.getElementById('1600PS').style.visibility = 'visible';
				document.getElementById('125FX').style.visibility = 'visible';
				document.getElementById('2400EO').style.visibility = 'visible';
				document.getElementById('2400ES').style.visibility = 'visible';
				document.getElementById('2700ES').style.visibility = 'visible';
				img_hide_all_electric();			
				}
				if(L=="Electric")
				{
				img_hide_all_gas();
				img_hide_all_electric();
				document.getElementById('AE115').style.visibility = 'visible';
				document.getElementById('AE125').style.visibility = 'visible';
				}
			}
			
			else if(H=="2+ Person Household")	
			{
				if(L=="LP" || L=="NG")
				{
				img_hide_all_gas();
				document.getElementById('1600H').style.visibility = 'visible';
				document.getElementById('1600P').style.visibility = 'visible';
				document.getElementById('125BO').style.visibility = 'visible';
				document.getElementById('1600PS').style.visibility = 'visible';
				document.getElementById('125FX').style.visibility = 'visible';
				document.getElementById('2400EO').style.visibility = 'visible';
				document.getElementById('2400ES').style.visibility = 'visible';
				document.getElementById('2700ES').style.visibility = 'visible';
				img_hide_all_electric();			
				}
				if(L=="Electric")
				{
				img_hide_all_gas();
				img_hide_all_electric();
				document.getElementById('AE115').style.visibility = 'visible';
				document.getElementById('AE125').style.visibility = 'visible';
				}
			}
		}// else colse of T
		
	} //if colse of L
	
	else
	{
		if(H=="Cottage/Camp")
		{
		img_hide_all_gas();
		document.getElementById('1000P').style.visibility = 'visible';
		document.getElementById('1600H').style.visibility = 'visible';
		document.getElementById('1600P').style.visibility = 'visible';
		document.getElementById('125BO').style.visibility = 'visible';
		document.getElementById('1600PS').style.visibility = 'visible';
		document.getElementById('125FX').style.visibility = 'visible';
		document.getElementById('2400EO').style.visibility = 'visible';
		document.getElementById('2400ES').style.visibility = 'visible';
		document.getElementById('2700ES').style.visibility = 'visible';
		img_hide_all_electric();
		document.getElementById('AE115').style.visibility = 'visible';
		document.getElementById('AE125').style.visibility = 'visible';
		}
		
		if(H=="1 Person Household")
		{
		img_hide_all_gas();
		document.getElementById('1000P').style.visibility = 'visible';
		document.getElementById('1600H').style.visibility = 'visible';
		document.getElementById('1600P').style.visibility = 'visible';
		document.getElementById('125BO').style.visibility = 'visible';
		document.getElementById('1600PS').style.visibility = 'visible';
		document.getElementById('125FX').style.visibility = 'visible';
		document.getElementById('2400EO').style.visibility = 'visible';
		document.getElementById('2400ES').style.visibility = 'visible';
		document.getElementById('2700ES').style.visibility = 'visible';

		img_hide_all_electric();
		document.getElementById('AE115').style.visibility = 'visible';
		document.getElementById('AE125').style.visibility = 'visible';

		}
		
		if(H=="2 Person Household")
		{
		img_hide_all_gas();
		document.getElementById('1000P').style.visibility = 'visible';
		document.getElementById('1600H').style.visibility = 'visible';
		document.getElementById('1600P').style.visibility = 'visible';
		document.getElementById('125BO').style.visibility = 'visible';
		document.getElementById('1600PS').style.visibility = 'visible';
		document.getElementById('125FX').style.visibility = 'visible';
		document.getElementById('2400EO').style.visibility = 'visible';
		document.getElementById('2400ES').style.visibility = 'visible';
		document.getElementById('2700ES').style.visibility = 'visible';

		img_hide_all_electric();
		document.getElementById('AE115').style.visibility = 'visible';
		document.getElementById('AE125').style.visibility = 'visible';
		}
		
		if(H=="2+ Person Household")
		{
		img_hide_all_gas();
		document.getElementById('1600H').style.visibility = 'visible';
		document.getElementById('1600P').style.visibility = 'visible';
		document.getElementById('125BO').style.visibility = 'visible';
		document.getElementById('1600PS').style.visibility = 'visible';
		document.getElementById('125FX').style.visibility = 'visible';
		document.getElementById('2400EO').style.visibility = 'visible';
		document.getElementById('2400ES').style.visibility = 'visible';
		document.getElementById('2700ES').style.visibility = 'visible';
		
		img_hide_all_electric();
		document.getElementById('AE115').style.visibility = 'visible';
		document.getElementById('AE125').style.visibility = 'visible';
		}
	}
}
<!-- main else -->
else
{
	if(L=="LP" || L=="NG")
	{
	img_show_all_gas();
	img_hide_all_electric();			
	}
	if(L=="Electric")
	{
	img_hide_all_gas();
	img_show_all_electric();
	}
}

return true;
}

function img_show()
{
var win = window.document.frmproduct;
for(i=0;i<win.elements.length;i++)
{
	if(win.elements[i].type=="radio" && win.elements[i].checked==true)
	{
		win.elements[i].checked=false;
	}
}

img_show_all_gas();
img_show_all_electric();
return true;
}



function img_show_all_gas()
{
document.getElementById('1000P').style.visibility = 'visible';
document.getElementById('1600H').style.visibility = 'visible';
document.getElementById('1600P').style.visibility = 'visible';
document.getElementById('125BO').style.visibility = 'visible';
document.getElementById('1600PS').style.visibility = 'visible';
document.getElementById('125FX').style.visibility = 'visible';
document.getElementById('2400EO').style.visibility = 'visible';
document.getElementById('2400ES').style.visibility = 'visible';
document.getElementById('2700ES').style.visibility = 'visible';
return true;
}
function img_hide_all_gas()
{
document.getElementById('1000P').style.visibility = 'hidden';
document.getElementById('1600H').style.visibility = 'hidden';
document.getElementById('1600P').style.visibility = 'hidden';
document.getElementById('125BO').style.visibility = 'hidden';
document.getElementById('1600PS').style.visibility = 'hidden';
document.getElementById('125FX').style.visibility = 'hidden';
document.getElementById('2400EO').style.visibility = 'hidden';
document.getElementById('2400ES').style.visibility = 'hidden';
document.getElementById('2700ES').style.visibility = 'hidden';
return true;
}


function img_show_all_electric()
{
document.getElementById('GL-2.5').style.visibility = 'visible';
document.getElementById('GL-4').style.visibility = 'visible';
document.getElementById('GL-6').style.visibility = 'visible';
document.getElementById('AE7.2').style.visibility = 'visible';
document.getElementById('AE9.5').style.visibility = 'visible';
document.getElementById('AE3.4').style.visibility = 'visible';
document.getElementById('AE12').style.visibility = 'visible';
document.getElementById('AE115').style.visibility = 'visible';
document.getElementById('AE125').style.visibility = 'visible';
return true;
}

function img_hide_all_electric()
{
document.getElementById('GL-2.5').style.visibility = 'hidden';
document.getElementById('GL-4').style.visibility = 'hidden';
document.getElementById('GL-6').style.visibility = 'hidden';
document.getElementById('AE7.2').style.visibility = 'hidden';
document.getElementById('AE9.5').style.visibility = 'hidden';
document.getElementById('AE3.4').style.visibility = 'hidden';
document.getElementById('AE12').style.visibility = 'hidden';
document.getElementById('AE115').style.visibility = 'hidden';
document.getElementById('AE125').style.visibility = 'hidden';
return true;
}