pngProductCat = new Image(54,18)
pngProductCat.src = "images/nav/btnProductCat.gif"
pngProductCat2 = new Image(54,18)
pngProductCat2.src = "images/nav/btnProductCat2.gif"

pngInstrGuides = new Image(54,18)
pngInstrGuides.src = "images/nav/btnInstrGuides.gif"
pngInstrGuides2 = new Image(54,18)
pngInstrGuides2.src = "images/nav/btnInstrGuides2.gif"

pngCompanyInfo = new Image(54,18)
pngCompanyInfo.src = "images/nav/btnCompanyInfo.gif"
pngCompanyInfo2 = new Image(54,18)
pngCompanyInfo2.src = "images/nav/btnCompanyInfo2.gif"

pngHome = new Image(54,18)
pngHome.src = "images/nav/btnHome.gif"
pngHome2 = new Image(54,18)
pngHome2.src = "images/nav/btnHome2.gif"

function changeImg(cImg,ref) {
document.images[cImg].src = ref.src
}




function clearInput(e){
if(e.value=='Enter Your Email')e.value="";
}




function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

 		 return true					
	}

function ValidateForm(){
	var emailID=document.form1.txtProductUpdates
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email Address")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }