// comic.js
// Function collection for P.S. WebComic
function ShowPopup(hoveritem, section)
				{
				hp = document.getElementById(section);
				
				// Set position of hover-over popup
				hp.style.top = hoveritem.offsetTop + 18;
				hp.style.left = hoveritem.offsetLeft + 20;
				
				// Set popup to visible
				hp.style.visibility = "Visible";
				}
				
				function HidePopup(section)
				{
				hp = document.getElementById(section);
				hp.style.visibility = "Hidden";
				}
				
				// Validate email address from form.
				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 || str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr || str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr || str.indexOf(at,(lat+1))!=-1 || str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot || str.indexOf(dot,(lat+2))==-1 || str.indexOf(" ")!=-1){
								alert("Invalid E-mail ID")
								return false
						 } else return true					
					}
				
				function ValidateForm(){
					var emailID=document.feedback.who
					
					if ((emailID.value==null)||(emailID.value=="")){
						alert("Please Enter your Email ID")
						emailID.focus()
						return false
					}
					if (echeck(emailID.value)==false){
						emailID.value=""
						emailID.focus()
						return false
					}
					return true
				 }