function change_page()
{
	
        document.getElementById("coldbox").style.display="block";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";
		
}
function change_page2()
{
        document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="block";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";
}
function change_page3()
{
        document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="block";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";
}
function change_page4()
{
         document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="block";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";
}
function change_page5()
{
       document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="block";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page6()
{
        document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="block";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page7()
{
        document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="block";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page8()
{
        document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="block";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page9()
{       document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="block";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page10()
{          document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="block";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page11()
{          document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="block";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page12()
{          document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="block";
		document.getElementById("shellbox").style.display="none";
		document.getElementById("image").style.display="none";	
}
function change_page13()
{          document.getElementById("coldbox").style.display="none";
		document.getElementById("corepastes").style.display="none";
		document.getElementById("corrosion").style.display="none";
		document.getElementById("greensand").style.display="none";
		document.getElementById("immersion").style.display="none";
		document.getElementById("investment").style.display="none";
		document.getElementById("foundrymetal").style.display="none";
		document.getElementById("mudding").style.display="none";
		document.getElementById("bakemold").style.display="none";
		document.getElementById("pattern").style.display="none";
		document.getElementById("sandtreatment").style.display="none";
		document.getElementById("steamcleaner").style.display="none";
		document.getElementById("shellbox").style.display="block";
		document.getElementById("image").style.display="none";	
}