function validate_enquiryform(f) {
  			for (var n=0; n < f.elements.length; n++) {
				if(f.elements[n].className=='mandatory'){
					n1=f.elements[n].name;
					//alert(f.elements[n].value)
					if(f.elements[n].value == ""){
						alert("Please enter the " + n1);
						f.elements[n].focus();
						return false;
						break;
					}
					if(n1 == 'email1')
					{
						var bValid = true;
						var field = f.elements[n].value;
						if ((field != null) && (!field.disabled)) {
							if ((field.indexOf(".") == -1) || (field.indexOf("@") == -1)) {
								bValid = false;
							}
						}
						if(bValid == false){
							alert("Email id format is not valid")
							f.elements[n].focus();
							return false;
							break;
						
						}
					}
					
					if(f.elements[n].name == 'npeople')
					{						
						if(isNaN(f.elements[n].value)) {
						alert("npeople should be in number");
							f.elements[n].focus();
							return false;
							break;
						}
						
					}
					
					
					
				}
  			}
  			
		}