function validatenewcar()
	{
		if(document.getElementById("cmbmake").selectedIndex==0)
				{
					alert("Please select a make.");
					return false;
				}
		if(document.getElementById("cmbmodel").selectedIndex==0)
				{
					alert("Please select a model.");
					return false;
				}
		if(document.getElementById("city").selectedIndex==0)
				{
					alert("Please select a city.");
					return false;
				}
		if(document.getElementById("cmbprice").selectedIndex==0)
				{
					alert("Please select a price range.");
					return false;
				}
	}
	function validateusedcar()
	{
	
	 if((document.getElementsByName('cartype').checked==false))
	{
	alert("Please select type of car to be searched.");
	return false;
	} 
		if(document.getElementById("usedmake").selectedIndex==0)
				{
					alert("Please select a make.");
					return false;
				}
		if(document.getElementById("usedmodel").selectedIndex==0)
				{
					alert("Please select a model.");
					return false;
				}
		if(document.getElementById("usedcity").selectedIndex==0)
				{
					alert("Please select a city.");
					return false;
				}
		if(document.getElementById("usedpricerange").selectedIndex==0)
				{
					alert("Please select a price range.");
					return false;
				}
	}
	
	function  validateNumeric(strValue) {
	 var objRegExp  =  /(^-?\d\d*\.\d*$)|(^-?\d\d*$)|(^-?\.\d\d*$)/; 
	 var flag = objRegExp.test(strValue.value);
	 
	 if(strValue.value != "" && !flag)
	 {
		 alert("Please enter numerical value");
		 strValue.value = "";
		 strValue.focus();
	  	 return false;
	 }
	else {
		return true;
	}
		
}