// JavaScript Document
function checkBlankField (txt)
			{
			var mint_txt = txt.length;
			var mstr_txt = txt;
			var mint_count = 0;
		    for (var iloop = 0; iloop<mint_txt; iloop++)
		    {
				        if (mstr_txt.charAt(iloop) == " ")
				        {
				           mint_count = mint_count+1;
				        }
				 }    
// if nothing entered in the field
   	 				if (txt == "")
   	 				{
					return false;
				    }
				    	 else if (mint_count == mint_txt)
				    	{
						return false;
						}
				return true;
				}
				
				function valid_email(eml)
			{
				//declare the required variables
				var mint_len;
				var mstr_eml=eml;
				var mint_at=0;
				var mint_atnum=0;
				var mint_dot=0;
				var mint_dotnum=0;
				
				mint_len=eml.length; //takes the length of the email address entered
				
				//checking for the symbol single quote. If found replace it with its html code
				if (mstr_eml.indexOf("'")!=-1)
				{
					mstr_eml=mstr_eml.replace("'","'");
				}
				
				//checking for the (@) & (.) symbol
				for(var iloop=0;iloop<mint_len;iloop++)
				{
					if(mstr_eml.charAt(iloop)=="@")
					{
						mint_at=iloop+1;
						mint_atnum=mint_atnum+1;
					}
					if(mstr_eml.charAt(iloop)==".")
					{
						mint_dot=iloop+1;
						mint_dotnum=mint_dotnum+1;
					}
				}
				
				//if nothing entered in the field
				if (mstr_eml=="")
				{
					return true;
				}
				
				//if @ entered more than once & dot (.) entered more than 4 times
				else 
				if((mint_atnum!=1)||(mint_dotnum>4)||((mint_dot-mint_at)<2)||((mint_len-mint_dot)<2)||(mint_at<3))
				{
					return true;
				}
				
				//if any blank space is entered in the email address
				else if (mstr_eml.indexOf(" ")!=-1)
				{
					return true;
				}
				return false;
			}
				
function ValidateForm()
			{
				if(checkBlankField(document.request.name.value) == false){
					alert("Please enter the Name.");
					document.request.name.select();
					return false
				}
				
				if(valid_email(document.request.email.value) == true)
				{				
					alert("Plese enter correct e-mail address");
					document.request.email.select();
					return false
				}
			}