function show_tube_lnk()
			{
				var obj=document.getElementById("tube_lnk");
				
				obj.style.visibility="visible";
				obj.style.display="";
			}
			
			

			function hide_tube_lnk()
			{
				var obj=document.getElementById("tube_lnk");
				
				obj.style.visibility="hidden";
				obj.style.display="none";
			}			


function chekform()
		{		
					
				if(document.frm.company.value=='')
					{
						alert("Company Name Should Not Be Blank");
						document.frm.company.focus();
						return false;
						}			

				if(document.frm.address1.value=='')
					{
						alert("Kindly Enter Address");
						document.frm.address1.focus();
						return false;
					}									


				if(document.frm.city.value=='')
					{
						alert("Kindly Enter city");
						document.frm.city.focus();
						return false;
					}														




						if(!validateEmail(frm.email.value))
								{
								 alert("Please enter a valid email id"); 
								 frm.email.focus();
								 frm.email.select();
								 return false;
								}
				

				if(document.frm.number.value=='')
					{
						alert("Kindly Enter the string as shown above ....!");
						document.frm.number.focus();
						return false;
					}									

															
					
					
		}		 



				function validate_search_form()
				{
					
				if (document.search_form.search_text.value==" Search")
					{
						alert("Please enter text for search ...!")	
						document.search_form.search_text.value='';
						document.search_form.search_text.focus();
						return false;
					}					
					
					
					if (document.search_form.search_text.value=="")
					{
						alert("Please enter text for search ...!")	
						document.search_form.search_text.focus();
						return false;
					}
				}




				function validate_login_form()
				{
						if (document.login_form.username.value=="")
								{
									alert("Please enter username..!")
									document.login_form.username.focus();
									return false;
								}
								
						if (document.login_form.pass.value=="")
								{
									alert("Please enter password..!")
									document.login_form.pass.focus();
									return false;
								}								
				}




				function validate_sml_form()
								{
						if (document.sml_form.T1.value=="")
								{
									alert("Please enter your full name..!")
									document.sml_form.T1.focus();
									return false;
								}

						if(!validateEmail(sml_form.T2.value))
								{
								 alert("Please enter a valid email id"); 
								 sml_form.T2.focus();
								 sml_form.T2.select();
								 return false;
								}	
																
								
						if (document.sml_form.T3.value=="")
								{
									alert("Please enter your mobile no ..!")
									document.sml_form.T3.focus();
									return false;
								}					
								
						if (document.sml_form.T3.value.length<10)
								{
									alert("Mobile No. should be atleast 10 digits... !")
									document.sml_form.T3.focus();
									return false;
								}			

						if (isNaN(document.sml_form.T3.value))
								{
									alert("Please enter numeric value only..! Like 9416000000")
									document.sml_form.T3.focus();
									document.sml_form.T3.select();
									return false;
								}																	


						if (document.sml_form.T4.value=="")
								{
									alert("Please enter your query..!")
									document.sml_form.T4.focus();
									return false;
								}
								
						if (document.sml_form.number.value=="")
						{
									alert("Please enter the above shown figure ..!")
									document.sml_form.number.focus();
									return false;
						}		
				}


  
   

			function validateEmail(email)
                        {
                                                        if (email == "")
                                                        {
                                                                return false;
                                                        }
                                                        
                                                        
                                                        badStuff = ";:/,' \"\\";
                                                        
                                                        for (i=0; i<badStuff.length; i++)
                                                        {
                                                        badCheck = badStuff.charAt(i)
                                                        if (email.indexOf(badCheck,0) != -1){return false;}
                                                        }
                                                        
                                                        posOfAtSign = email.indexOf("@",1)
                                                        if (posOfAtSign == -1){return false;}
                                                        
                                                        
                                                        if (email.indexOf("@",posOfAtSign+1) != -1){return false;}
                                                        
                                                        posOfPeriod = email.indexOf(".", posOfAtSign)
                                                        if (posOfPeriod == -1){return false;}
                                                        
                                                        if (posOfPeriod+2 > email.length){return false;}
                                                        
                                                        return true;
                                        }